I tried that with foams and regular muffs and it was very quiet. Too quiet (hard to hear) while on a range with commands or if you need to hear stuff behind you. I then switched to electronic muffs and foams which seemed to work better in those applications. YMMV of course.

As far as the OP's question, I use an electronic pair of Howard Leight ear muffs that I picked up from Cabelas when on the range and giving commands. The electronic muffs block the loud stuff and you can still hear people talking when you need to.