I go biking regularly with 3 mates, all of us have the same Sena SMH10 Bluetooth headset which we use for chat on the move.
Brian, the set up seems strange and complicated but it works. Quite often though a member of the group drops out, due to range sometimes, all you do is push the button 1, 2, or 3 taps dependant upon which order it was set up, and you hook straight back into the chat.
The range is up to say about 1/2 km in open countryside, but can be much less in town with buildings etc.
I can't recommend them highly enough, they have transformed our bike trips.