Arena CombatFollow

Looking for some information regarding rogues in Arena PvP:

Which class would complement us in a 2v2 team? I was thinking a destruction spec'd warlock for maximum carnage, however I am open to suggestions.

Which spec should i focus on? My impression of Arena combat was "Kill everything as quickly as possible", so I was thinking shadowstep. I vaguely remember other posters on this forum mentioning that shadowstep shines in arena, just want to verify.

If shadowstep is the way to go, how would that talent tree look? Would the extra points be spent in Combat for parry ratio increase and dodge rating or in assassination for crit and damage increases?

If anyone would like to link their arena rogues so i could see the spec and enchants, that would be very helpful.

PS: I noticed that blizzard has conflicting information on their website as to the set bonuses for the Gladiator set. The Arena rewards page says the set bonus is +resiliance rating and reduced cooldown on gouge. In contrast, the Armor sets page says the gladiator set has added damage to Evis and Envenom, along with the chance-on-hit of a zero energy finishing move. I'm guessing the Arena rewards page is correct?

http://www.wowhead.com/?talent=iGx0oxZbZEMecMMocxot In Combat i would only take Sinister improved or Gouge on 2. You can take both and drop Elusiviness, but i like that 90sec Colldown on Blind.

The range will be increesed that means basically that sap will become usefull more in Arenas. But i would hear some advice from other Players.