Well, he also said he wants the pedal to be wireless, so where's your diagrams for that?
Listen, we could get stuck in a battle royale over this moot point, but coming from a point of ease of use in performance, simplicity, and reliability, the blower switch is the better option. Running A/B boxes is a great idea if you're using piezo bridges to separate amps, several guitars, or true stereo setups, but for something like this it's just an unnecessary kludge.