Here's the trick I did while touring using an X32 and no FOH.
I used a laptop and a tablet at the same time. On the tablet you can leave it on the channel faders or DCA's that are the most important. Do everything else on the laptop with a mouse. This way you ALWAYS had a finger on the important channels, and I could navigate anywhere else with the laptop and tweak EQ or FX or whatever.
I kinda hate mixing on just a tablet by itself. I'm always leavinng the faders to adjust something, then having to go back to the faders to ride a solo. It's a lot of back and forth. The dual tablet or Tablet/Laptop method is almost as good as having a dedicated surface.
One more bonus feature is it's dual redundant. If one device goes down you have the other. You could go so far as to run one device on 2.4ghz and the other on 5ghz, or hardwire the laptop and wifi for the tablet, etc, etc.
