you know this thread is almost two years old right?

Velocity has both ano and pc rims I think.
Steel rims in the rain are bad. Aluminum is good. Powdercoat or anodized will wear down. I'd expect powder coat will just look scuffed at first then wear through to bare metal. Ano just wears down and gets silvery. Go look at some bikes if you want to see what it looks like. I'm sure you will find at least one or two on a typical bike rack. Squealing brakes are usually due to crappy pads or incorrect toe-in, not the rims so much.

Is that all?