It would completely get around the need to sync and also would give the ability to have multiple users on one channel. If there was a lot of chatter on that channel, we could just change the channel with the jog button or something
Example: We were on a trip, I have a radar detector. When it went off, I said "radar" into the mic of a competitor's system and we all slowed down, the cop passed and away we go. Or "Watch that car on the left" and everybody does.
As it is, I have cycle through 3 other riders and ride at the same time. Not a very functional multi-rider system.