To hell with how cool others think you look. I mean, I had an acquaintance who was in a coma after a motorcycle accident. He made a full recovery and started wearing a full face helmet on his Harley. Out here where there's no helmet law, he caught a lot of cat calls for riding a Harley with a full-face.
Although, I'm all for making your aerodynamics smooth and good looking (oh, there it is again. Good looking to us ecomodders at least) . Rivets and dents, and uneven surface area aren't as aerodynamic anyway (better than nothing though, obviously.
