If it was up to me, I would use at least three of the peices, the gloves, chest and leggings for the 32 attack pwoer (gloves) and 1 and 2% chacne to crit (chest and legs), then I would get other agility gear or such, just in my opinion, not all of it is good.
If u are playin in PvP with the rogue PvP armor it is much better.Say in AB u are the only guardin the flag an 3 of them come to try to take it you could live longer therefore you can hold it till your team gets there.If a mage has like 1% health you should have used rupture to finish that mage.