Apple.com only lists GPRS when referring to use of your mobile phone as a wireless modem.
I'm keen to know wether T3G/027 can be connected to via bluetooth from a Mac.
I look forward to further comments from the Harrier owners out there.
Yep, it'll work. Whether you're using GPRS or CDMA is irrelevant when you're interfacing via Bluetooth. Just open Internet Connect and set up a new connection with 'bluetooth adaptor' as the communication device and the appropriate Mobile Jetstream phone number.
Synchronising your calendar and contacts might not be so simple. Unless iSync implicitly supports your particular handset, it's unlikely to work.