Hmm interesting posts i used to do powder coating for about a year with a company when i was younger.
We had a monorail line and parts had to be grounded at all times or the powder could fall off moving it around.
The process went raw parts hung on the line then travelled trough the washer hot acid based solution then air dryed on the way to the spray booth then travelled through the booth sprayed from both sides by 2 sprayers and then dirrectly into the furnce for about 20 min and come out done and packaged.

Not realy a complex procedure parts took about 40 min from start to finish, we used airated powder tanks which the powder was in a fluid like state and sprayed with electrostatic guns. Cross contamination wasnt realy a issue the spray booth was sprayed down with air between colors and the same with the powder tanks changeover only took 15-20 min by then the oven had settled down.

Alot of the spray thickness and appearances vary from powder to powder krinkle coats to gloss would all need to be sprayed at different thicknesses pressures and voltages and would vary in appearance before they went into the oven. the same formula dosnt work for all powders.

Unless something has changed the powder is also toxic as hell if you read the labels there are like 20-30 cancer causing ingredients in the powder and realy shouldnt be done in a makeshift enviroment. and resperators should be worn and the powder should not come in contact with your skin.

Powder is in a way cleaner and a good option for heavier parts but proper recovery and dust collection is a must lighter parts have almost no room for error if the finish is stuffed the only real way to remove the powder coating is to burn it off and acid dip it and Im talking glowing red hot.
Powder isnt realy practical for items subject to heat over 300F it would be fairly suitable for items like legs but keep in mind if it chips it isnt very easy to fix unlike sprayed wet finishes but on things like wire forms it is more durable and resistent to wear from say a ball but on a lockdown bar if its chipped or gets a significant scratch which could happen easy enough during moving the machine it could become a headache and would likely need to be burned off and recoated.

Also keep in mind powder coat isnt as chemical resistent to solvents like auto clear finishes or as suitable for sheet metal parts that are flexible such as aprons or it could, crack and chip with flexing and bending and holes will likely need to be redrilled or resized and threaded parts chased with a tap for things to fit properly again.