I don't use the programmed Intros very much, so I have a few styles where I have reprogrammed the Intros to be Break/Fills.

You gain one for each Variation (rather than one global B/F), but you have to trigger them just before you need them... I would imagine that most arrangers could be programmed this way if you don't use the Intros. Best thing about this system is that you can use ONE pedal to trigger it (if Intro can be one of your pedal choices), and it will automatically give you the B/F appropriate to the Variation you are in.

They are simple to do, as well. At their easiest, all you have to do is strip out ALL the data for a beat or two (after the first hit on all tracks - or just the drums and bass) of the normal fill for that Variation level (harder for Korg's with only two to chose from!) and probably strip out all but the bass and drums and maybe just one other part for the remainder of the fill. Takes a couple of minutes.