I saw a guitar guy do something similar with a multi effects pedal at a bar. Problem was he created every chord sequence and additional riff live, then saved them to a preset, then did the song. No advance prep, so he took so long he only really had to do 5 songs per set. Nice to get club owners to pay you for your song create time, while we do it at home then have to play a lot more songs to fill in set time for the same money.