Someone finally getting close on this one. I’ve been saying for a while that it would be great if a bluetooth headset could clip in/out of a mobile phone to avoid worrying about where to keep it (other than hanging like a pendant or on an ear).
This is the closest I’ve seen, though it’s not clear which phones, if any, are ready to accept this headset. This device has a whole other angle: it can be charged in a notebook PCMCIA/ExpressCard slot - great for VOIP use and storage - though it’s not clear if it sticks out when inserted.