I'm still shocked that they finally got around to get ventrilo working on macs. I haven't tested it myself but I'm pretty sure that the Apple BT headset only pairs with BT phones.
If there is an option or app somewhere for macs that allows for 'pairing' of BT headsets in general with the Mac OS then I don't see why this shouldn't work. Are there apps that allow BT headsets to sync with the desktop OS?