Bodycote has been refining their process, and they are currently undercoating the boron carbide with something to provide better corrosion resistance. I had my gun coated in January, and was told earlier this month that I could return it for recoating using the latest process.
The only apparent wear on my gun is in areas where two bc-coated surfaces rub against each other. For instance, there is absolutely no evidence of holster wear, but there is a small bright spot where the slide stop (1911 pistol) rubs against the frame. No wear at all where the (uncoated) barrel lower lugs cam over the slide stop pin, but wear on the hammer where the slide rides over it. This wear is not normal, according to Ann at Bodycote, and she didn't hesitate to offer to recoat it.