+1 to what ADW said. We run ours with constant open comm. Seems fine that way.
What I havent tried with this kind of setup is listening to FM or Ipod with an "open" mike... I dont think its possible... Some one correct me if I am wrong please.
2010 Lava F800GS...AKA "Dirty Harry"
1998 R1200C Classic Black...AKA "Dick The Cruiser"