When done properly I bet standard powder coat is fine at least for some time. Not sure why brake-cleaner would be an issue either frankly. It evaporates so quickly I wouldn't expect it to harm good powder coat.
There are many different chemistries for powder as well. You have epoxies, polyurethanes, etc. for powder paint just like you have for liquid paint. They even have "graffiti" proof powders that are so robust that you can use some pretty nasty paint cleaners to wipe them clean and not hurt the underlying coating.
Don't know all the particulars. Someone that does that for a living should know what's best to work with in the powder world.
Paul
If going the Powdercoat route, you want it done in an Epoxy formula powder. The epoxy powders are chemical, fuel, and brake fluid resistant unlike a typical polyester powder. Epoxies are limited in colors, but most professional powdercoating shops will have epoxy powders in basic colors like black, grey, white, etc.
Yes, I do this for a living.