I bet it would be possible to make a limited run, maybe 100 or so. the thing is the carpeting has to be done by hand, but the graphic could easily just be a printed one for a production piece (though I really DO enjoy the artifact-ness of one-offs)
I'd be more than happy to come work for Kayo or wherever for a short stint.
Universal, you hit it on the head with the comfort comment. I still haven't made one to keep for myself yet, but I got to ride one I made for a friend all day a couple of weeks ago (cause I had bruised my heel super early in the day and got demoted to backpack carrying duties)
and even with shoes on, and a bruised heel, I noticed that it felt super comfy under my feet. Like skating your livingroom floor itself.
AND you can still ollie pretty damn good on them.