I don't/won't buy anything with cerakote on it unless it's a factory thingy. Definitely not some "custom" cerakote job. It's really the only finish outside of Rhinolining that depreciates your gun, unless it's a factory finish (M110, Aero, WC, etc that has value) It's not like paint (which you can remove); they sand blast the surface to make texture so it will adhere. With anodized guns, they remove the anodize. I'm kinda with Kurt on cerakote or any of the permanent ceramic based coatings. I liken it to 5.11s, they were cool 20 years ago but they actually kinda blow and the people still wearing them haven't got out of their own way and don't know they suck. Same with cerakote. It's good on something factory where tolerances are accounted for, but not on your custom whatever unless you're keeping it forever. And it does fill in gaps and holes and rails spaces and can jam up slide to frame interference, etc.
But I'm for real on the 5.11s. Get rid of that shit and get Kuhls, or Prana, or just jeans. People who wear 5.11s say shit like booger hook and bang switch and do ports checks and "scan for threats".