It reduces the cool down on grenades, not useless at all, actually really helpful.
English
-
Maybe not useless in all situations but for most situations the other 2 perks are better to me.
-
It does both so your grenade will recharge faster while you have the benefit of lifesteal when you get a kill with it. Got to love the voidwalker.
-
Its cool man, I switch it up every now and then :P