hello there blazarov,
it will work, and yes many have already got this up and working.
Search for SIG or Piconet or simple Bluetooth on say Google
and it will get clear to you.
I have experienced i have to let Tom Tom activate bluetooth
and then my Rikaline GPS receiver and my Parrott carkit work.
In this order it goes well.
When bluetooth activated and connected to my Parrott carkit and then activating TomTom it can't find/connect to my Rikaline GPS receiver.
btw i use Qtek S200 ( = HTC Prophet)
S200 aka Prophet