Hi Don,
if you could afford to lose a fill or variation or 2, you could always use one of those style parts with your chord progression imbedded in style ie works like intro 1 where you don't play your own chords
Remember your fills can be up to 32 bars long , & they will loop if tapped twice.
The 2cv's in a fill versus up to 6cv's in a variation, wouldn't matter either because you won't be changing chord types.

Admittedly it might make it more song specific, but.

There's some very interesting stuff you can do with korg styles including having different time signatures for different style parts within the one style.
.