I see it like this. The re. is written to be interpreted by a reasonable perfessional standard. So if the glasses our sunglasses are not extreme or draw attention they are ok. Just ensure that the SM remembers the purpose of the glasses or sunglasses is to preserve or enhance eyesight, not to be stylish, so Gucci frame would get you a bad experience with me. Yes, they protect your eyes from the sun, but if you are issued Ballistic shades why would you spend that kind of money for something that does less? Thats like buying some Air Jordans that match your ACU's and having the nerve to wear them in uniform in lue of your boots.