It will probably scrape off pretty easy and peel. But that is merely speculation- heat, rotation, dirt and water exposure. The powder coating has worked for other members in the past, a flat or semi gloss looks good.
If you can get the line-x for free, you can try it and just rattle can black any parts that peel.
A lot of people have just ratlle canned them black and touch it up as necessary, a textured spray is recommended. Cheap, easy and it looks good. Just a thought.
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