I've owned several over the years, always insist on glass, and airman type frames. I do like them for sunny days and upstream nymphing. One sees a flash in the vicinity and simply lifts for a hook up. I don't know why, but that's about the only time I wear them.
With two of the three, the polarization axis was wacko and I had to do returns to get them right. Visually, one could look at his digital watch and the face would be entirely black with one eye and readable with the other. In other situations, glare was eliminated for one eye and not the other. Just made for some odd visual effects.
In both instances, technicians greeted me with blank stares when I explained the issue, but once I made it to the optometrists they made things right.
I went with gray just to keep colors true.
Last edited by 1minute; 02/08/15.