I am using shards of galanor exotic armor in crucible, but exotic perk 'sharp edges' doesn't get activated half of the times. I use blade barrage, I get a kill (or kills) and I stay alive afterwards. But I don't get the 'super restoring' indicator, and I don't get any super energy.
You're better off running a different exotic than the exotic that was made for that subclass node. It used to be 10x better giving you up to 90% Super energy. It's about as bad as Skull of Dire Ahamkara, but not as useless as Skull.