I have one. I got it when he wired my guitar and it works great...never had anything else with an obel so...
I was using Loopmaster pedal switcher which gave my four independent loops for my pedals plus a tuner out but things started getting noisy recently and I started simplifying the whole thing and now I use the Wheel to put a tuner, dirt box, mu-tron and delay in the loop. After the loop I run an Earth Drive, Strymon Flynt (reverb/vibrato) and a boomerang.
The whole thing is very quiet now and does what I want. I have become much less concerned with trying to get Jerry sounds recently, not gonna try set things up the way he did but try to use the concepts and gear the way I want.
"One man gathers what another man spills..."