The cerakote on my Witness is holding up great. The gun is steel, and the cerakote was over a fresh park.
On the slide of my Para it is wearing on the left side of the muzzle. This gun is stainless and the cerakote went on over a sand blast with 80 grit AO. Perhaps there is a better way to surface prep stainless for Cerakote.
To be clear, it is not flaking or chipping. Just getting polished away. I carry this gun about 3X as much as any other gun too, so perhaps I would be seeing the same thing if I carried the witness as much. But I don't think so. I think it just didn't work as well over stainless.