Although the eyewear was specifically distributed for testing during training or work assignments, every tester ended up wearing them during off-duty hours as well. None of them have mirrored or metallic appearing lenses, but that was not perceived as detracting from the overall stylishness of the glasses. What was found to be of great utility, and what increased the perceived comfort level, was the curved shape of the frames themselves. Where the frames meet the earpieces is usually a blocky hinge. These frames are molded so as to curve fairly smoothly around the front of the wearer's face. With the B2s I can feel them around my eyebrows and my cheek bones. The PT-1s and PT-3s are just as carefully designed to provide a close fit, without making the wearer feel like his eyes are being crowded.
At the end of the test period, I asked for everyone to give me back the test pairs they had. Every one of them expressed disappointment at having to give them up. Each tester had his (or her) own preference. I still ended up with the B2s as my favorite. A former Marine friend of mine who is now a police officer fell in love with the PT-3s. A K9 handler I know decided the PT-1s were his favorite.