Thanks for posting your findings! I think we just need to wait for samsung to pull their fingers out and make Kies work for ML. Perhaps we should all just email them so they'll take quicker action? I believe it's something to do with ML being the first OS X that's exclusively 64bit, thus drivers and such need to be rewritten to support the instruction set. Lion was 32 and 64 to get devs ready for the 64 bit switch, but I guess SOME just didn't bother!
Tbh, I can't actually remember why I wanted keys anymore heh. Playing with my new droid device for a week and I've already found good ways to transfer music, do backups, and sync other stuff over... but would still be nice for fw updates perhaps?