One of the developers' design goals in World of Warcraft is ability parity between PvE and PvP. The problem with this strategy is that it becomes very difficult to buff a dominant PvP class if it's performing poorly in PvE. Beast mastery hunters and frost mages have long been maligned in raids while being feared in PvP combat. No spec knows this story better than the subtlety rogue, which has simultaneously been the best PvP spec and the worst PvE spec in the game.
Most active subtlety rogues are quite content, as their main focus is PvP. Due to the stringent requirements of most raiding guilds, there are only a few raiding rogues that have stuck with subtlety through the years. In order to get inside the head of these persistent shades, I spoke with one of subtlety's most stalwart champions, Haileaus. He currently maintains the amazing subtlety PvE thread on the official forums and was the rogue who inspired me to try out subtlety raiding on more than one occasion during Cataclysm.