My experience so far on this has been that the JavaMO will not work with the blackberry. I haven't spent enough time on it to tell you why, but I did take the client install files and convert them to the format BB needs to install, the MD did recognize the phone via bluetooth, but I have never actually been able to get them to "connect"
I haven't tried the Wifi route, that might be next.
There isn't anybody currently working on it that I know of. Hari was kind enough to create the "prototype" JavaMO, but nobody has run with it from there.