your hard work will never chip away.
rattlecanning works great, as long as you apply thin, even coats. of course paint doesn't last as long as powdercoat. just use decent quality paint, make sure you prime it (can't hurt to use a primer specifically indicated for use on metal), and apply a clear coat or two after the color.
if you're ambitious, you can sand it between coats.
if you're really ambitious, you can wet-sand it between coats.