On the older (but still excellent) Roland GI-20 MIDI guitar converter, one could assign the S1/S2 switch (on the GK pickup but also on piezo-equipped guitars that offer a toggle switch e.g. Godin, Brian Moore..) to octave up/octave down. This functionality is an incredible convenience when sequencing MIDI tracks whether using external hardware modules or software instruments. The new GR-55 is designed with tons of (internal) tones with all kinds of tweakable parameters, none of which are designed to influence "the outside world". Is it possible to set up an Environment octave up/down toggle that can "learn" the S1/S2 toggle switch on my Godin LGX-SA? And be available track by track? Of course I can use the mouse to click on Transpose in the Inspector, but it's so much nicer to simply flick the switch where my hand is already available. If not, how about some inexpensive foot controller?