Re: As a practicing[0] guitarist ...
"Perhaps you have three hands?"
Changing setups between songs is much easier with one button to hit on your phone than resetting a bunch of dials. Or trying to remember which settings on which pedal, in combination, you need for the next song. There's an use case for this.
Not making the band, or the audience, wait for the guitarist to tweak his amp/effects settings leaves more time for him to retune!
Biting the hand that feeds IT
