I want to know who "those guys" are who say ceramic coatings make the metal brittle. As one who has done high temp ceramic coatings (which were liquids applied over lightly media blasted metal and allowed to air dry), I fail to see the logic in this statement. Don't pass along rumors unless you have experienced it yourself.
JetHot has been bought and sold several times over the years.
Check out Performance Coatings in Georgia. They usually do nice work.