(it could even have a rib that runs in the profile channel to proved some lateral restraint)
nice one ross, that sounds like a great idea!
that alli profle is pretty accurate, it sounds like it would work a treat

i cant see acetal/delrin wearing a grove in your alli to quickly

with the price of skate bearing being the way they are id be tempted to use two on each wheel and make the wheels as wide as possible