well, those demos allowed to study ways to bypass (not crack!) the protection - at least that's my interpretion of the story
to be precise: in those (demo) days you could download a plugin that was generated for your card, once (for each board id) and time limited.
since the timeout check obviously was executed in a certain situation (only) it would be rather easy to detect the pattern and write a patch.
At least a 1000 times easier than to break the board id/encryption thing.
it's not their fault...
cheers, Tom
ps: if you want a Hammond emulation at all, there's no better than the B2000.
Natives B4 is rather similiar, but CWA's version has more detailed fx and a way(!) better tone (thicker and more 'analog')
Prodyssey has a great synth engine (as usual), but also significant deviations from the original - so it depends on your demand of authenticity if it's for you.