Hello,
For invul if you can take all but unstopable, i would consider to take unsto and remove the passive F/C.
You will be able to put in it the same set, and it will be a great asset when you need it.
Here's how I'd do it with nothing but SOs. An IO based build will of course be a different monster.
If you don't have Mids' hero Designer, you should get it. Awesome tool for putting builds together.
The build below has:
70.2% SL damres
23.4 FCENT damres
With 5 enemies around you, you'll have 26% defense to types all but psi.
You'll note that I left out shockwave. I love shockwave on my claws/sr. I love it a lot. But it does knock enemies all over the place and that's bad for invincibility. I replaced it with conserve power which freed up slots for other things.
Hero Plan by Mids' Hero Designer 1.401
http://www.cohplanner.com/
[u]Click this DataLink to open the build![u]
clawsinv: Level 50 Technology Scrapper
Primary Power Set: Claws
Secondary Power Set: Invulnerability
Power Pool: Fitness
Power Pool: Speed
Power Pool: Fighting
Power Pool: Leaping
Ancillary Pool: Body Mastery
Hero Profile:
Level 1: Strike -- Acc(A), RechRdx(3), EndRdx(7), Dmg(34), Dmg(45), Dmg(50)
Level 1: Resist Physical Damage -- ResDam(A), ResDam(40), ResDam(50)
Level 2: Slash -- Acc(A), RechRdx(3), EndRdx(7), Dmg(34), Dmg(46), Dmg(50)
Level 4: Dull Pain -- RechRdx(A), RechRdx(5), RechRdx(5), Heal(36), Heal(37), Heal(37)
Level 6: Swift -- Run(A)
Level 8: Follow Up -- Acc(A), Acc(9), RechRdx(9), RechRdx(15), EndRdx(34), Dmg(46)
Level 10: Temp Invulnerability -- EndRdx(A), ResDam(11), ResDam(11), ResDam(15)
Level 12: Hasten -- RechRdx(A), RechRdx(13), RechRdx(13)
Level 14: Super Speed -- Run(A)
Level 16: Unyielding -- EndRdx(A), ResDam(17), ResDam(17), ResDam(31)
Level 18: Focus -- Acc(A), RechRdx(19), EndRdx(19), Dmg(31), Dmg(37), Dmg(42)
Level 20: Health -- Heal(A), Heal(21), Heal(21)
Level 22: Stamina -- EndMod(A), EndMod(23), EndMod(23)
Level 24: Spin -- Acc(A), RechRdx(25), EndRdx(25), Dmg(40), Dmg(43), Dmg(48)
Level 26: Eviscerate -- Acc(A), RechRdx(27), EndRdx(27), Dmg(43), Dmg(43), Dmg(46)
Level 28: Invincibility -- EndRdx(A), DefBuff(29), DefBuff(29), DefBuff(31)
Level 30: Kick -- Empty(A)
Level 32: Tough -- EndRdx(A), ResDam(33), ResDam(33), ResDam(33), EndRdx(40)
Level 35: Tough Hide -- DefBuff(A), DefBuff(36), DefBuff(36)
Level 38: Weave -- EndRdx(A), DefBuff(39), DefBuff(39), DefBuff(39), EndRdx(48)
Level 41: Resist Elements -- ResDam(A), ResDam(42), ResDam(42)
Level 44: Resist Energies -- ResDam(A), ResDam(45), ResDam(45)
Level 47: Combat Jumping -- DefBuff(A), DefBuff(48)
Level 49: Conserve Power -- RechRdx(A)
------------
Level 1: Brawl -- Empty(A)
Level 1: Sprint -- Empty(A)
Level 2: Rest -- Empty(A)
Level 1: Critical Hit
------------
[u]Set Bonus Totals:[u]
Be well, people of CoH.
Thanks Bill.
How would the build look with generic IOs in it?
I'd really like to have Shockwave instead of CP though.
Also, Strike vs. Swipe, Swift vs. Hurdle and Boxing vs. Kick what are the arguments for one over the other?
Thanks for the help.
Dave
p.s. - I do have mids' but I'm not that good with the numbers crunching. 
strike vs swipe, well the 2 power got nearly the same DPA but for single target you got a good chain that is : follow up, focus, slash, strike. => begin again.
swift vs hurle, a mather of taste though with Super speed you will want those vertical bonus that give hurdle and CJ.
Boxing vs kick, you don't care you won't use those 2 power. Just look at it if you want a particular set of invention.
The last 4 power in the build proposed are somewhat not core ones.
You can remove one of em to take shockwave.
If you need more slot remove the slot that are in the passive resist power.
Ok, Ive settled back to just playing my main, which is a Claws/Inv, and Im ready for a respec.
Before working on said respec I realize the biggest question is what do you want you build to do? My question is, what are my options?
Following is a list of powers Id like to have in my build (of course there are other powers I want, but ran out of room for). If Ive overlooked any obvious better choices please let me know.
Claws everything except one of the tier 1s and Confront
Invuln Everything except Unstoppable (ran out of room)
Fighting Boxing, Tough, Weave
Speed Hasten, Super Speed
Fitness Hurdle, Health, Stamina
Leaping Combat Jumping
No room for Ancillary powers.
Once I figure out my powers and what I want out of the build, Ill have plenty of questions about slotting and enhancements.
Thanks for any help you can supply, from the looks of many of the posts I have read in this section, scrappers are a helpful bunch.
Thanks,
Dave