An ambitious federal agent might obtain a search warrant of the guy's home and charge the guy if they find a gun. I certainly wouldn't take the chance by applying for a CHL.
Jim's Rules of Carry: 1. Any gun is better than no gun. 2. A gun that is reliable is better than a gun that is not. 3. A hole in the right place is better than a hole in the wrong place. 4. A bigger hole is a better hole.
no guns = might makes right