I haven't used those but I have used their two-part epoxy and associated topcoat. These need to be mixed before use with the built-in system. The mixing system works smoothly and the paints sprayed very well indeed.
Unfortunately they haven't proved as durable as I'd have liked. I used them on my roll bar and need to keep them wrapped to avoid marring them.
I've found that Stewart's EkoPoxy primer, sprayed with Harbor Freight's $15 touch-up gun, sprays about as easily and is much more durable. As a result, I used the EkoPoxy on my interior.
I used a Rustoleum spray paint on the control stick and heck, it's more durable than the Eastwood product and it's just a spray can.
Your experience may differ....
Dave
RV-3B now working on the cowl