If it could midi slave it would be damn near perfect for me needs. Aside from that, great pedal and a great learning tool. I'd been playing bass for a little over a year when I got the rc-50, my first pedal, and it had me instantly writing songs (not great ones but still) and practicing for much longer periods than I ever had.
Now I'm letting the keyboardist/guitarist use it sycn'd to the microkorg and my computer running ableton with beats. He can layer pads and synced arp'd stuff and then play leads or do guitar stuff on top all while it loops perfectly without having to stomp each loop perfectly in time.
It took me a little while to really figure out the ins&outs of the pedal, but it's a great tool and I think you'll dig it
