Recently saw you can order the glasses from their site with any combination of lens, finish, arms etc... Pretty great.
Below is a special make-up of the Sportsman with bayonet temples (my preference) and a black treatment. For some reason I imagine Nick Maggio being all over these...
You can see it more easily in the standard gold treament here (v nice too); the prominent bridge, or sweat-bar, that was originally developed to hold the sunglasses away from your eyes thus reduce fogging and literally stop sweat while hunting. This style is descended from a shooting frame. Intel from Susan at RE. thx.