Enemies run away from your Grenades. If they got out at all, they will still die (the reason I say they melt like butter). Besides for me, having two Grenades slows down the cooldown timer too much; so it isn't my personal cup of tea. Also Angel Of Light makes me a floating target, so Touch Of Flame is a better option. I also run Heart Of The Praxic Fire, so I have grenades faster than I can throw them with max Discipline. But hey, it's all a preference to each player.