another benefit:

in the past I have learned songs, and practiced my parts at the computer (sitting down)

Then when I get to band practice or the gig, my muscle memory is confused, because now I'm standing up (maybe not a big deal for other people, but it has been my experience that practicing in the same posture as I'll be playing makes a big difference in repeatability)

The Jam Man makes it very easy to put a bunch of practice songs in order, and step through them while standing in front of my pedal board. That way I can also practice the repetitive motions of stomping on pedals in a timely manner. That might seem like something that doesn't need practice, but to this ol' man every action needs to be choreographed in order to flow seamlessly later on stage. Any pause or moment of confusion throws me a curve that I might not recover from.

So, I'm finding this device to be useful and easy to use. Even if I don't play gigs, its good for recreational practice.

https://www.dropbox.com/sh/ey71h8ep047758h/AAC12jNM0Hz9Q8zsh5iDeqNHa?dl=0