Hey Skrogh, I read some of your comments over at talkbass. Basically, I'm not sure if there is any way to get at the opamps square-wave before it gets flip-flop divided.
If, say, one of the pins has it, but is simply not in use, I could make great use of a squared fundamental signal. I run it through -2Oct's path, send it straight into -2Oct's pot, or put into a small octave up circuit.
As far as the transformer for the octave up: the 273-1380 from radio shack don't look too big. I know it's crowded in there, but I figured I could stash the transformer in the battery compartment. -This is just a guess, and I probably shouldn't have filled my post with confusing speculation.
Again, what I'm really asking is: can we get at the squared fundamental Q anywhere in the Oc-2 circuit?