As mentioned in many other reviews, it does take some time to get used to and optimally adjusted. Since the mirror is much closer to your eye, it does provide a much clearer view behind you than my previous bar end mounted mirror. However, being a small mirror on the glasses makes it sensitive to your head movement and positioning. That has been my biggest adjustment factor. There is no single mirror position adjustment that is optimal for the different positions on the bike. I have my mirror pretty dialed in for when I am on the hoods since that is the position I am in a majority of the time. When in the drops however, your head is angled down slightly so you just see the sky in the mirror. You have to raise your head intently to glance behind you.
To me they aren't the most stylish glasses, but I am more interested in the vision they provide than how I look.
The glasses are of high quality. I got the Black Smoke High Contrast lens (which I think just means Polarized) and the view through them is vivid.
Overall I like the glasses, they provide a better view behind me than the bar end mirror I had previously.