Better version: https://youtu.be/7U1UzTg2HXA
Demo of a Flip-Flop switcher for either a loop switcher or dual overdrive pedal. I plan to eventually use a dual J-K Flip-Flop with reset so that I just use a single chip, but I had the counters around, so I thought I'd try it.
Schematic here:
http://jameslow.com/2018/02/20/flip-flop-loop-switcher-dual-pedal-switcher/