Okay, but that means Snipe is kinda meh, because it's really rare that you can incapacitate entire mob with one flashbang in one turn and if you can you would be better off just throwing a frag at them anyway. There's also weird thing that if you leave the combat zone from one side and reenter from another in stealth, everyone there is still 100% aware of where you are, which is retarded (maybe to counter this cheesy tactic), but as long as no one had made an attack i still counted in stealth mode and could perform Snipe.
Good call about pistol synergy.