The glide is so slow that its barely usable, especially in the crucible. Hunters are also Alot quicker and their jump is amazing. Warlocks also have good things Ofcourse like fusion gernades,flame shield and radiant skin,but axion bolt is not one of them imo,you can just keep running from it till your health regens and it can't kill you when you have full health, I'd argue that arcbolt gernade is better than it.