I know this has been beat to death, and there might be more than one way to skin this cat, but I'm at work and don't mind wasting my (and your) time
I already have a great MIDI set up; Liquid foot with 3 expression pedals, delay mix, volume (5db boost range) and wah, works great. I use the spring loaded Mission EP1-BK-SPL for wah - I love the feel / function of the spring load.
here's my scenario: adding another expression pedal to control wah (and possibly boost) to put at another location on stage for live shows (so I can go over and annoy other band members, grab spotlight, etc.)
I know I could add another EP1-BK-SPL to the MIDI set up, and maybe mess around with the parameters to have this one also do a boost... but that sounds hard and would require me to think, reprogram the board, etc.
For a lazy solution, how about I use the switch input on back of Kemper to control a second wah stomp, this one with a volume boost in its setting? Would the MIDI wah want to turn on both stomps (and vice versa for the new switch input wah)?