I apologize for seeming to lump you in with a group (fixie fashion victims) without consulting you as to your true affiliations: I'm sorry. I was speaking more broadly about the proliferation of such in my city, not about you in particular, I know it didn't read that way (as I re-read it) that was sloppy of me..
But to me anything that combines "Deep Vees" and "chrome plating" smells like fashion, not craftsmanship nor practicality...but that's just me. Since you're concerned with retaining a useful braking surface (not something the fixie rider would care about, BTW) I suggest that you should *not* polish that part of the rim, and consider abrading it with fine wet/dry sanding if you powdercoat.
I should add that I am a fashion victim myself, I just follow the "cranky old f*rt" skool.