It'd be really easy to wire a footswitch into this PedalPCB circuit inline with the octave volume pots:
Ocelot Octave - PedalPCB.com
I have zero need for this, but now I want to build it and it's in my cart
Ocelot Octave - PedalPCB.com
I have zero need for this, but now I want to build it and it's in my cart