I'm using this skill on my dagger rogue as a rage generator and attack speed buff pretty much on cooldown. It only has a 7.3 second cd, so I use it quite often. One thing that irritates me about this is that the animation forces my character to stop moving, which makes it feel very clunky and awkward to cast as often as I do (Especially on my toon that is constantly dodging and teleporting around with blade flurry.) I understand animation lock is just part of certain skills, but I really don't see a need for it here and think it would play much better if this could be cast on the move.