Well, you can try it yourself if you have have access to a blasting chamber and an oven that'll fit whatever you're looking to do. The degreasing is just a soak in acetone - you can buy that at Home Depot.
I see no reason why a talented and patient craftsman, or an auto body guy, couldn't do it.
I bought some to make some sample colors direct from Cerakote. They're great to deal with, minimal shipping charges, very helpful if you have Q's.
-J.