I used this for a number of years and had a lot of fun with it.
I put the chips in to get me appx 34 whole seconds of memory.
That was a big deal back then! Fwiw I think the sound of this is much better than the digitech version. I have a metal custom footswitch for it as the original wore out.
I used it mostly to create atmospheric background stuff but also got quite good at making time oriented loops. You just need to have a drummer who is keen to play along.