Yes, if done right. You'd want them stripped back and prepared well, just like any paint.
When powder coating they just leave it in an acid bath overnight to strip all the **** off it, then coat it - hence the need to remove all bearings and bearing surfaces. Headraces need to be pressed in, which is a pain to do if you don't have the right equipment or you end up paying more!
I'd rather die peacefully in my sleep like my Grandfather, than screaming in terror like his passengers.- Jim Harkins