It would be nice to have this feature as this device negates the need for a watch, which all seem to support the CT10
I doubt it will be able to since it doesn't go on your wrist. I believe the CT10's have a pretty short communication range (maybe only a couple feet) and a lot of people would leave the G80 in their cart or bag causing all sorts of potential issues. It would be nice though. Maybe someone from Garmin could confirm if this is technically possible.
Actually, the CT10's aid in detecting the swing. I'm not sure if they replace the sensors in the watch for detection, or if there is some combination, but it is more than just a proximity sensor. That's why they can be so much more accurate with detecting putts with the putter.