I don't know what a gray man is. I don't wear BDU
Clothes either.
The only time I really feel vulnerable is in parking areas getting to and from a vehicle or at a a gas station
I have learned.that drawing a handgun from a front pocket while sitting in a car is not easy.

I like to do my hunting BEFORE I pull the trigger!
There is only one kind of dead, but there are many different kinds of wounded.