I was PvPing against a fire secondary tank last night. Could not beat him at all. The only AT that took more than one poison trap, and shrugged it off, and the debuff mortar didnt really seem to affect him at all. He basically toyed with me and my minions. I couldnt hurt him at all quick enough to kill him.
The fire secondary may be a late bloomer, but it PWNED my Ninja Trap MM totally. I was...useless.
And yes it was a bit end heavy for the fire armor tank, so he jsut took mine..
i was recently talking about a stone/fire as well.
i think what is really important is letting your fury bar do the work, slot for end reduction and recharge primarily instead of damage (fury does more that SO's can), as stone like you say can be a bit savage on endurance, and the recharge is not suited for generating fury.
you also have alot of soft control waiting for you to reduce fury even more. your best bet would be making sure you get the alpha strike for some instant fury, heal and then as much knockdown as you feel is necessary. then smash though them with a massive hammer with binds about how mighty you are 
, SMASH!
as far as PvP goes i would rather NRG, SS or even dark. though it does have some solid hits and you could do quite well for yourself. i cant say too much about stone in PvP ive only ever used it once (somehow killed a stalker on my stone tank with unsloted attacks!!) and come against it once
Ok so last night i made a new toon "Ultimate Bruiser". (Got Critical Bruiser to 29 few days ago, so want another) It is a Stone Melee / Fire Aura brute currently at lvl 8! I like the idea of this brute as it seems to have;
- Good AoE damage
- Good Single Target damage
- Average resistance/defense (ill have tough, maybe not weave)
- Amazing self heal
- A Rez
- Secondary damage boost
- Good PvE and PvP potential
BUT, it is an end hog, sure when i get consume and stamina it will ease up and could slot sum end redx on some attacks, but it will still (i think) be quit end heavy!!
Im willing to put up with this if it really is as good as i think!!
If anyone has one and could give out a few tips, i would be greatful.
Thanks!!