BlueTooth for Radios?

BluetoothWas thinking a couple of days ago, (but forgot about until now) that what would be great for Amateur (or even CB, PMR, etc) Radio is a BlueTooth headset.

It would have to consist of 2 parts one to fit Radio (so you could leave in bag, on desk) and the other bit being the Headset. This might be inpractical as there can be various types of connections to radios, but the headset could be universal across the range.