The expose armor change alone will make warlock/priest THAT much more effective against rogues, not that warlock/paladin and warlock/hunter/healer do not already beat most rogue comps.
Glyphed 1.25 minute killing spree with +20% damage? It is probably still kind of situational. How often are you going to catch a player alone with no one else near him in a 3v3 match? Once you add in pets from locks/hunters it is even worse. This ability needs a lot more control (like arms warriors blade storm) to carry a weak PVP tree about wow gold.
Having said that, if you have two 2.6 weapons, swap one in for offhand with wound, and you have 93% proc rate on poisons thanks to PPM change, 9-10 wound poison with 20% higher damage on top of 10 white hits? That is gonna be well over 10K damage in less than 3 seconds against any armor! Especially consider you can score at least two more rounds of auto attacks plus a sinister strike during it about wow gold. Now we are talking! I still would like to see this ability gets some additional benefits. Feral druids get fear immunity with berserk; how about stun immunity for shadow dance to get cheap wow gold?
Most of the new rogue glyphs are gimmicks that will see very little use in actual play. Cloak of shadows with 40% physical damage reduction, sorry I need to save it for casters. It is too situati onal to take a major slot about wow gold. Crippling poison with +20% chance to proc? That may be very handy for specs without deadly brew but still not the type of glyph that can potentially change the way a class is played to get cheap wow gold.