@garyt I very nearly got myself a Beat Buddy from the FS a while back, maybe I should have done!
I guess I was thinking it wouldn't be any real difference to the Alesis SR18 I have, but the key point (if I have understood you correctly) is that you can edit the drum sequences easily, to create your own drum lines, via your PC and then upload them onto a pedal for use with a band.
If that's correct, then that sounds like it's providing the best of both worlds!