Hmm. Interesting.
Looks like Motorola Solution has a new talk about out that supports blue tooth headsets - the
MU350R. You still need to push the PTT button unless you turn on VOX in the radio. I'm wondering how well that would work. The cost would be about $120 presuming you already have the headset compared to about $400 for the Cardo units. Too, it has much longer range.
J.