I really like your ingenuity, good idea for a simple communication system.

I have a full Autocom system on my V-Strom which I really don't like. It's supposed to be "top of the line", but I think it's just overpriced outdated technology. I purchased a Scala system for my USA trip and love it. Does everything you want to do. Wife, GPS, MP3 and Phone all come through the helmet and I hardly even know it's there. My wife can listen to her music without bothering me and the turn by turn GPS coming through the helmet is great, as I don't ever have to look at the GPS, which makes riding safer.

I don't take phone calls or listen to music while riding, but it's nice to be able to make a quick call to book a hotel or check in with the office without ever removing my helmet. Battery life is about three days, and I made a little charger so they can be topped off from the bike. I was skeptical at first about bluetooth, but they work great.

The only thing left to sort out with these wireless systems is distance, number of parties allowed in conversation, and price. I'm sure they'll all be addressed in the near future with newer models so it's bye bye Autocom for me.

Cheers!
ChinaV