As a generic midi controller...Will there wok with the III ?
For what it's worth, I used a LiquidFoot Pro with my Ultra years back because MFC was delayed. It worked but it challenged my limited MIDI skill set to program it. Can't say about now, but at that time, neither the Liquid Foot company owner or online community was very responsive or helpful.
The online editor helps, but its a little flaky. I used the AXE FX II/XL in the global settings & the learn function in the axe III as some of the CC#s didn't seem to work when I hard coded them. I had constantly review the programming that I sent to the pedal, not everything was updating. I kept it simple, one row of presets and one row of IA=slots. With any luck tonight I will have top row tuner, tap, scene + and -.