TS9 might be a little tricky as they are similar to the Boss pedals, the switch is only a momentary switch unlike the 3PDT switches. The unit requires a toggle to turn it on and off.
All the true bypass pedals I've seen have 3PDT switches in them, if there's an LED.
Keeley sells a Looper pedal which will take the pedals completely out of your signal chain when not in use. I'd probably go with something like that rather than messing with micro-switches.
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