I dont know what mechanics you are around but I work on cranes for a living. I have ome pair of gloves. A pair of the mechanics wear all leather fabricators gloves. Just about the only time I wear them is welding, heavy grinding, torching, and using cables. That's it. The rest of the time i dont even think about them. Oh and I guess when its winter in MI and I'm working outside. But that's a different beast.
As for shooting with them, only time I wore them was durring a CQB class while in the Navy (security forces on a aircraft carrier). We were forced to wear them.