First off, 9855 owners either love or HATE the Glidetouch.
No, it's not impossible, but is is impossible to use the OEM BT ULF module (Much cheaper NOt to, though...)
I'd wait a bit - there will be new HUs in the next few weeks at CES introduced with Bluetooth support inboard or optional - from many companies.
Eclipse will be going red lights on their units, and getting better looking on the non-nav units. Kenwood will introduce a BT add on piece. Pioneer will intro a nav unit called the Z 1 with BT inboard and the ability to dial POI numbers. I dn't know what Alpine will have but it's worth waiting to see
