I am going to guess that the presence of a firearm would allow them to charge you with hunting without a license or hunting out of season, and spotlightng etc.
§ 29.1-351.1. Penalty for violations.
Unless otherwise specified, any person who violates any of the provisions of this article shall be guilty of a Class 2 misdemeanor.
The presumption that you are hunting is also referenced in 18.2-308 A (6)
6. Any person actually engaged in lawful hunting, as authorized by the Board of Game and Inland Fisheries, under inclement weather conditions necessitating temporary protection of his firearm from those conditions, provided that possession of a handgun while engaged in lawful hunting shall not be construed as hunting with a handgun if the person hunting is carrying a valid concealed handgun permit;
Of course, game laws have always been used to disarm the people.