Bone Conduction Microphones

This is a new concept to me - in fact, I just found out about it! There is some talk on the HFPack group about light weight headsets. John G8OZH inquired about the application of bone conduction earpieces for use in portable Ham radio operations requiring the lightest of components. They are most certainly more compact than traditional headsets - such as the Heil Traveler, for example. Think of the earphones you get with Ipods and some cell phones these days - the ones that fit right inside your ear. Now imagine one of those, not both (such as for stereo use) that functioned as a microphone as well. I don't think you can possibly beat that for size/weight of an earphone/microphone combination!

Here is one example I found while searching the 'net from Helmetaudio.com. The price seems to be reasonable also, I figured they would be a lot more than that.

The big question is how well do they work with a ham radio?