It is also possible with the Audya to use Midi drums instead of Audio drums, and then you have the same facilities as any other keyboard, but I guarantee not a single Audya owner would want to do that because through a PA with a room full of people live drums are just miles apart from Midi drums. You wont hear that through headphones or in your home fully....add to that the live guitars and an Audya owner stands out head and shoulders above the rest.
This, again, is kind of my point about audio drums... If they ARE so much better than MIDI drums, who wants to use legacy and converted styles only to be shown up by the audio loops? And sorry, but you can only use the audio loops already in the machine. This isn't going to help you one iota with styles in genres either not present at all, or poorly represented (no-one wants every polka, or reggae style to have the exact same drums).
Would someone with an Audya care to post some drum demo's of audio styles they have made themselves? Is it even possible? Can you create entire audio drum parts for styles, with Intro/Endings, Fills, Break/Mutes, 4 Variations, maybe a Riff?
How easy is it to do?
For me, at least, if I had to be content with ONLY the styles that the arranger came with (plus the few that the manufacturer themselves release for it), I would go crazy after a few months! Maybe MIDI styles aren't QUITE as good sounding as audio styles. But I'd rather have an arranger where I could make ANY style sound as good as the best ROM ones (with some editing) than one where I'm stuck with what I get in the first place...