Depends what you mean by 'last'.
The original chrome has lasted in many cases over 30 years, I don't think powder coating would last unless the vehicle is a 'trailer queen'.
Removing the chrome would have to be either by reversing the plating process or grinding off (but you'd need a jig to retain the shape). I not sure blasting would work because of the hardness of chrome plating, you'd probably just deepen the pits.
Colin

