Please give us the option in the app to have the footswitch toggle between manual mode and channel a (or b).
This is an option on the pod express, and many similar products, and I can't be the only one who finds it a more user friendly option when using the amp in a "traditional" way.
Yes you can kind of do it with midi but not exactly. When you change channels with the footswitch it respects the second switch ie if reverb is engaged with the footswitch it stays on when you change channels and vice versa. Midi will always revert both effects to the state the where in the channel, regardless of footswitch position.