I have a pretty good complement of glasses. I own about 8 pairs of various Oakley glasses and 3 pairs of Smiths. On the sport end have the half-jacket and M Frames and the Smith V-Ti as well as the Smith Reactor Max. The Jawbone has great coverage and really hugs the face the way the frameless and half-frame glasses can't. The work really well and protect great. Optics are great, but I honestly think my eyes can't tell the difference between high-zoot Oakley lenses and lower-price but still high quality Smith optics.
Issues: As noted in most reviews, they tend to block your spedometer if its mounted on your stem or handlebar. I have mine on my aerobar extensions so its a non-issue for me. The vented lenses let in just enough unfiltered sunlight to be a bit distracting. Sometimes I notice, sometimes I don't. But obviously this is not an issue with full coverage lenses. The arms sit under your helmet straps, rather than over as I tended to wear all my other glasses. I imaging however that the straps will wear off the paint of the arms over time... and at $255 for the transitions version I bought... not looking forward to having scuffed up glasses.
I would love to give it a 5. It does a lot of things well. But if I have to be honest, Smith Optics do 95% of what Oakely does, comes with 3 lenses, a hard case (the Jawbone is the first sport glasses I have gotten that comes with a hardcase), and has a nut-job rock-solid lifetime warranty which I have used and love, but their glasses cost 1/2 as much. For that value aspect, it gets 4 starts. They are superior to Smith's but not $150 better.