NewYorker,
I'm not even bothering with the patterns on the PSR.. I'm using the Zooms patterns and the ones I create.. Doing fills is simple.. You just record the fill and pick where you want it.. Really easy... Not using the Zoom as a sound module, however I can play the Zooms sounds from the keys if I so choose... It's a really simple set up.. I record my patterns on the Zoom (fills and all) then I just chain them together in the order I want... I then record all my other tracks on the PSR and voila...

Squeak