I only ever use it once and thats to get rid off it flashing on my hud, tutorial. After that I never use it again. Just doesn't suit my style of play. And it makes me feel as though I'm not in control of my game. And it wastes ammo, when my weapon stats aren't too great, ammos in short supply early on for my char's.

I don't use it anymore.

Much better game without it I think.

Gets a bit hair-raising when exiting a building or metro...

...and have 5 Mercenaries pounce on me.

But it's great fun.