Why would anyone choose to use 'Circle of Life' on the Gunslinger over 'Incendiary Blade' or 'Knife Juggler'. In PvP it seems to be a joke, you've got a 1 hit shot loaded but you instead opt to risk the knife for little effect but serious satisfaction at the difficulty associated. I can't ever remember using 'Circle of Life' seriously in PvE because it feels outweighed by the ability to recycle your knives and the Nightstalker subclass in general. It's viability in all activities is outweighed by the alternatives, or at least that's me.