Hi Lloyd
It works fine. It is very robust and heavy and doesn't 'wander about' like some foot switches. You do need to make sure you wear light weight shoes that you can feel the four switches through. If your feet are of the larger size,
you can always assign the same function to the 2 left side switches and another function to the 2 right hand switches. It cuts you down to 2 switches, but it reduces the chances of hitting the wrong switch at the wrong time.
John