I am currently using the Tier 1 IDE with Ubuntu via Wine emulation. It's not particularly stable but saving regularly helps with that,
I find cut+paste tends to crash AppGameKit, and also seem to have problems with some demos not working, but I am assuming that is to do with some of the graphics commands not wanting to work under Wine.
At the moment I am just attempting to learn a bit about the commands in AppGameKit so the crashes aren't really a problem.
It would be nice to be able to build and send to my device (playbook) but it seems that is only available in the full paid version of AppGameKit
If that was allowed in the trial version (maybe with a watermark on it), then I'm sure the excitement of seeing your own code running on your own device would make people buy the full version of AppGameKit,
Anyway, I'll probably buy it eventually,
Blackberry App Development & ZX Spectrum Game Development.