I am using a kind of FC-7 pedal,conected to my keyboard,I made that from a old Tv-remote,I been using the contacts inside,of course you need some skills to do it,but finally I have another 7 buttons on my keyboard and first of all this Fills to Original and Fills to Variation,before I had to press Fill twice for this.Its very simple and useful.Hope it helps.
Vio