Heh, going to stores and playing with the demo stuff is half the fun of buying somthing.
I know that cgoban2, and the java webstart at kgs.kiseido.com works on linux, I've done that myself. I also know that cgoban1 has been ported to the zarus, most people seem to have just used it to play against gnugo, but I should be able to play on igs or nngs(two other go servers) at least which is pretty good. Kiseido Go Server, or kgs uses sun's java all the way, and you need the latest java to be able to run the webstart from that "Play go now" button. I really don't know too much about the zaures or the differences between the roms. If anyone with other roms wants to try I'd be very gratefull.
I may get one anyways though, but some of the other pdas are looking good with integrated wireless and almost half the price.... I do want linux though, and the clamshell switching to a regular pda is very cool.