But that does not solve my two-way wireless issue. I am trying to avoid having to wear two wireless packs.
If you're looking for a full duplex transceiver in a single housing, that by it's very nature is expensive, especially if you want good range, good audio quality and little latency. Putting a transmitter in close quarters with a receiver and having both work well is neither cheap or easy. Even a single digital transceiver using TDMA with the kind of audio and latency specs I suspect you'd like is not a Radio Shack item.