What if you get shot through the hands, spinning your gun across the room to land at the feet of a complete stranger? As the murderer places his gun to your head, I bet you wish the stranger could shoot yours, huh?
Anything that prevents a gun from discharging is preventing it from working as intended. Anything that can go wrong....WILL. I refuse to add more crap that could. I don't even have a retention strap on my holster because it could possibly prevent ME from getting it out.
I once bought a brand new car, then took the engine out so nobody else could drive it. Make sense?
What's the point of buying something to use, then creating ways to keep it from working?
If somebody is quick enough to take your gun out of its holster without you being able to at least entrap his hand while you shoot them with your backup, you are in violation of the first rule of carrying a weapon.
Always be aware of your surroundings.
I have become almost ambidextrous. I have learned to pick things up in stores, push shopping carts, and numerous other things left handed. I rarely keep my right elbow away from my pistol. I often rest my arm on thepistol grip when at checkout counters or any other confined spaces where people are close to me. This both obstructs the weapon from a straight pull from the holster, allows me to feel anything fishy without having to constantly watch behind me, and also allows me to quickly entraptheirhand between my elbow and my side if I feel somone grasp my pistol. Always have a plan. It may get shot to hell, but at least you'll have one.
I have too much crap to pay attention to now. I don't need something else like a weaponI.D. system to worry about.