I've also got a Behringer FCB1010, better than the Rig Kontrol or the equivalent Roland as it has two expression pedals.
Hisssssssssssssssssssssss ☹
Th real advantage of the RK3 over the Behringer FCB1010 is it is a 4 ch, (2 in 2 out) HQ audio interface, its a USB external midi interface, it maps automatically to GR3 and the pedal control messages do not use midi (strangely enough) and use less processing overhead. The pedal is both light and compact (easily fit into a laptop bag) and is powered thru USB so that means less wires less fuss and more music. *Rene looks up to the gods of NI and hopes they will remember him at Christmas time*