I've seen posts that others have had trouble using it on OZ. TheKompany will not support you if you use OZ, so I would save my money untill you know for certain; their support is poor on the tkcROM - "works for all of us in the office, you must have hacked your Zaurus, so we cannot help you."
I bought 5 tkc apps that never did what they were supposed to do, and I do not use any - wish someone would have warned me before I spent my $$$$$!