I've my usb bluetooth dongle working on my C1k running r198 ... but I did it manually.
I've documented what I did to get the ppp link to my old ISP on my homepage along with a bluetooth connection manager help script. ("Zaurus" on the left, "Issues" on the top and then "ppp_over_bluetooth" or just go directly
here)
BTW: I also checked out GPRS connectivity with a slightly modified chat script.
I've no means to check out UMTS connectivity but I guess it should be fine too.