In case you didn't see the update elsewhere, Sc!ence! has a new pair of shoes:
19" DOT moped rims and adapter nipples from Holmes Hobbies, custom 13/14g butted spokes, 2.75" 4 ply motorcycle tires. No more worry about folding a rim when hitting a pothole (it happened, scary ) and little chance of a flat tire on the way to work. Rides really nice and smooth, better than any large bicycle tire I've ever tried.