I'm sure Lurch will chip in, but my only experience with powder coating was on a vintage bike frame. Thought I'd try powder coating on a BMW as I was sick of the acrylic lacquer I'd previousy used on bike restorations chipping and getting scratched over time. It came back with the coating so thick that it was difficult to get bolts and swinging arm bushes thru some of the the holes in the frame and it cracked when I tightened up things like engine mounts. I ended up stripping it and giving 2K a go (my first attempt at using 2K, it was still fairly new at the time). Much better.
I've never been tempted to try it again. Was 20-odd years ago, who knows, maybe powder coating has improved since then ?? Maybe I got someone who wasn't very good at it ?