I OCed a few times last fall at the Dicks at Fair Lakes, while helping a friend shop for a new home-defense shotgun. I had no issues at all, and was even handling several shotguns in the process. One of the clerks complimented my Para, and said he'd never seen a tan Serpa...
But nobody complained, nobody asked me to "check it in" and no managers approached me. We had a pleasant experience all around, and they were very helpful, knowledgeable and polite.
It's probably cause you're so damn cute