Is there a prize for ugliest mounting bracket?
If there is, you're in the running...especially considering how great the rest of the bike is looking.

Those wheels look really good!
In reference to your earlier concerns about the indicator scratching your powdercoat there's another option, even though you obviously already figured out a way. You can get different tips for your indicator: wheels, balls, pads, etc. Check out catalog page 2224 at
www.mcmaster.com. Enco and MSC probably have them cheaper, but for some reason their websites have been down for a few days now.