Here is the build I would go for in PvP.
01) --> Lunge==> Acc(1) Acc(3) Dmg(3) Dmg(5) Dmg(5)
01) --> Focused Fighting==> DefBuf(1) DefBuf(7) Defbuf(7) EndRdx(9)
02) --> Focused Senses==> DefBuf(2) DefBuf(9) DefBuf(11) EndRdx(11)
04) --> Agile==> DefBuf(4) DefBuf(48) DefBuf(48)
06) --> Build Up==> TH_Buf(6) TH_Buf(13) TH_Buf(13) Rechg(15) Rechg(15) Rechg(17)
08) --> Impale==> Acc(8) Acc(17) Dmg(19) Dmg(19) Dmg(21) Rechg(21)
10) --> Practiced Brawler==> Rechg(10) Rechg(23)
12) --> Hasten==> Rechg(12) Rechg(23) Rechg(25)
14) --> Super Speed==> EndRdx(14) Run(27)
16) --> Hurdle==> Jump(16) Jump(25) Jump(27)
18) --> Health==> Heal(18)
20) --> Quickness==> Run(20)
22) --> Stamina==> EndMod(22) EndMod(29) EndMod(29)
24) --> Combat Jumping==> Jump(24) Jump(31) Jump(50)
26) --> Ripper==> Acc(26) Acc(31) Dmg(31) Dmg(33) Dmg(33) Rechg(33)
28) --> Aid Other==> Heal(28)
30) --> Aid Self==> Heal(30) Heal(34) Heal(34) IntRdx(34) IntRdx(36) EndRdx(36)
32) --> Throw Spines==> Acc(32) Acc(36) Dmg(37) Dmg(37) Dmg(37) Rechg(39)
35) --> Dodge==> DefBuf(35) DefBuf(43) DefBuf(46)
38) --> Elude==> DefBuf(38) DefBuf(39) DefBuf(39) Rechg(40) Rechg(40) Rechg(40)
41) --> Focused Accuracy==> TH_Buf(41) TH_Buf(42) TH_Buf(42) Rechg(42) Rechg(43) Rechg(43)
44) --> Laser Beam Eyes==> Acc(44) Acc(45) Dmg(45) Dmg(45) Dmg(46) Rechg(46)
47) --> Super Jump==> Jump(47) EndRdx(48)
49) --> Conserve Power==> Rechg(49) Rechg(50) Rechg(50)
50s
controllers: Ill rad , grav rad, fire kin, ice kin
blaster: ice em
scrapper: spines sr
Looks like a very end heavy build to me so if you are going to keep leadership I would put 1 end red in each attack otherwise you'll be using elude as an end recovery power 
Speaking of elude if your going to pvp you have to 3 slot defence its the crown jewell of scrapper powers.
I would also consider talking evasion earlier but its your call.
Aid self also has a relatively large end cost maybe switch a recharge for reduce end otherwise it has large tendancy to take big chunks of your end bar away 
I cant really comment of the spines side of things but can impale, lunge, and ripper be a good attack chain, maybe with quickness you could get away with it but I always saw one of the reasons to go spines was the ability to cycle ranged attacks.
Btw I appologise for any speaking, grammar, or nubish mistakes I'm very tired
thePhilosopher Martial Arts/Regen/Fire Scrapper
theRegulator Empathy/Energy/Soul Defender
Total Inertia Ice Blast/Kinetics/Psy Corruptor
Total Inferno Ice Blast/Thermal/Leviathan Corruptor
I wouldn't go leadership pool with an SR you don't really have the endurance for it.
I'd follow imag's build for PvP. Tried one on test server much like that, and it was insane, stalkers weren't a problem either.
Appreciate the response Been pvpin past few nights and rep hitting on 220 now, so im pretty pleased with the toon so far. The build dont seem to end heavy at the min in pvp, pve's a different story but half the fact that we never stop to rest. Anyway....i like the look of that build suggested, my only concern is dropping this leadership pool. I think my plan will be to keep it until i hit 40, then check to see wat rv's like, hopefully busier than warburg. I like being able to see the stalkers well in advance, annoys the hell out of them 
so if sirens looks the place to be, ill most likely keep it, if rv seems to be as busy, ill drop it as ill be getting fa from the epics, and then prob go with hasten and ss.
Cheers again 
Hardest toon iv built to date with so many "must have" powers. This toon gonna be purely for pvp so any comments on the build below would be appreciated. Pay little attention to the lvls of slotting as this was just rattled up quickly on builder. Stalker hunting is part of the plan, hence the leadership pool, and i always like having some form of heal, so aid self was a must have for me. Any comments greatly appreciated
Cheers
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Exported from Ver: 1.7.6.0 of the CoH_CoV Character Builder
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Name:
Level: 50
Archetype: Scrapper
Primary: Spines
Secondary: Super Reflexes
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01) --> Lunge==> Dmg(1)Dmg(3)Dmg(3)Acc(13)Rechg(21)Slow(33)
01) --> Focused Fighting==> DefBuf(1)DefBuf(5)DefBuf(5)EndRdx(15)EndRdx(40)
02) --> Focused Senses==> DefBuf(2)DefBuf(7)DefBuf(7)EndRdx(17)EndRdx(46)
04) --> Agile==> DefBuf(4)DefBuf(15)DefBuf(17)
06) --> Build Up==> Rechg(6)Rechg(11)Rechg(11)TH_Buf(27)TH_Buf(34)TH_Buf(37)
08) --> Impale==> Dmg(8)Dmg(9)Dmg(9)Acc(13)Rechg(25)Immob(33)
10) --> Practiced Brawler==> Rechg(10)Rechg(19)EndRdx(43)
12) --> Combat Jumping==> EndRdx(12)DefBuf(34)
14) --> Super Jump==> EndRdx(14)Jump(48)Jump(48)
16) --> Dodge==> DefBuf(16)DefBuf(19)DefBuf(21)
18) --> Swift==> Run(18)
20) --> Health==> Heal(20)Heal(25)
22) --> Stamina==> EndMod(22)EndMod(23)EndMod(23)
24) --> Quickness==> Run(24)Run(43)
26) --> Assault==> EndRdx(26)EndRdx(27)
28) --> Ripper==> Dmg(28)Dmg(29)Dmg(29)Acc(31)Rechg(34)Acc(40)
30) --> Tactics==> EndRdx(30)EndRdx(31)TH_Buf(31)TH_Buf(33)
32) --> Aid Other==> Heal(32)Rechg(43)
35) --> Aid Self==> Heal(35)Heal(36)Heal(36)Rechg(36)Rechg(37)IntRdx(37)
38) --> Elude==> Rechg(38)Rechg(39)Rechg(39)DefBuf(39)DefBuf(40)
41) --> Focused Accuracy==> EndRdx(41)EndRdx(42)TH_Buf(42)TH_Buf(42)
44) --> Quills==> EndRdx(44)EndRdx(45)Acc(45)Slow(45)Slow(46)EndRdx(46)
47) --> Conserve Power==> Rechg(47)Rechg(48)
49) --> Evasion==> EndRdx(49)EndRdx(50)DefBuf(50)DefBuf(50)
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01) --> Sprint==> Empty(1)
01) --> Brawl==> Empty(1)
01) --> Critical Hit==> Empty(1)
02) --> Rest==> Empty(2)
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