Splitter-blend (ROG) in a treadle (wah pedal enclosure)- advice

[aefpv]

I have seen a few posts of others placing a ROG Splitter-blend circuit in a treadle (wah pedal enclosure), but none of them have described the design layouts.  I created a splitter-blend pedal, but really think the treadle idea is the way to go.  I have been using it for delay and reverb in parallel, but I don't always want delay.  The treadle would make it smoother and easier to toggle the effect out of the signal.  I have a big knob that I can "somewhat" manipulate with the foot, but when in the "heat of a song" my feet are not coordinated enough...

I have never used a treadle for a pedal build, but do you all have any advice?  My main concern is the mechanical connections for the pot and the treadle.  Also, where is a good place to purchase  treadle enclosure?  Lastly, would adding an option for an expression pedal better?  If so, how do you add that capability?  Any other words or wisdom or ideas are always appreciated.

Thanks,
AE