It takes some time to work out how to program the footswitch but once you are through (and wrote it down) it works as expected. Well, nearly. I was disappointed to find out that if I assign the switch assignment in one bank, it does that for all. So although you can link the tuner to a switch, you probably would like to stick to the standard settings of 1=FX, 2=Modulation and 3=Delay (or Reverb if you prefer). It sure is handy when you gig with a Marshall Code. And it works well even with a lousy cable between the Code and the footswitch. Not sure how long the plastic cover will last. For practice, you can survive with the buttons on the Code or the app on your phone as well.