It's not hard to build, and I've got all the stuff to put one together.Don't F around with it, just get the pedal! Seriously, I couldn't imagine owning one of these amps without having the switching options at my feet. Everybody that's got one of the pedals has been happy, guy seems to be on it. The only thing I would wish for is the pedal wasn't hard wired, that it could have a detachable cable to keep things clean...don't always need 50' of footswitch cable hahah
The only reason I'm thinking about doing it, is I think the KoolKat thing looks stupid with all that crap art work, and it's bigger than I would like.
But to be fair......$89 is not a bad deal considering what someone's time may be worth.
I see them available on eBay right now.