THere is no reason to ever have a cammo gun, unless you are hunting 2 legged criters.
I disagree!
That camo coating provides a level of protection against corrosion. For those of us that hunt in rain, sleet, snow, frigid temps, boats, swamps, mud holes, hedge rows, heavy brush, and any other crap missed the coating is a tremendous way to avoid corrosion on exterior surfaces.
Anything a person can do to protect metal surfaces and maintain ease of use is a plus. When I clean I spray the trigger group with silicone and go. If I get caught in heavy moisture I am fine until I reach a dry out time which can be many hours or even days. When I go through brush I can use the gun to protect me from scratches instead of the other way around.
I have blued shotguns with discoloration caused by rain and 12 hours in the blind, even though it was clean when I went.