mine both have the ear piece and that works good.
When I used my throat mic with the ear piece (clear tube that plugs into your ear) I had a sound amplifier in the other ear to insure I could hear both things good. The armor rattle was a bit loud. I haven't solve that noise yet. I was able to have a PTT in each finger tip and talk into the voice amplifier or the walkie or both. I could also keep it private when talking with squires or someone asking a private question and not press either button.
I would love to try it again sometime. It works out at large events where you can get away from the group like a ball game or concert or convention center. channel 5 01 yo.