gismo
Touchdown! Greaser!
Yes, I am. I fly with Maui Jim's that I bought last year and I understand all their glasses are polarized. In addition, when I tilt them as you described, LCDs become completely black.
Sounds polarized all right.
That I can't say anything about because I know nothing about the problem. It seems like it makes a huge difference. But I haven't tried looking at the same plane with/without/without polarization. Maybe regular sunglasses would do just as well? It doesn't seem like that to me, but I'm not sure. What I have noticed, however, is that there aren't any spots on the canopy of the two planes I fly regularly (maybe it's because they're Beech-$$$ windshields? )
I have seen visual artifacts looking through windshields with polarized glasses but the effect is often subtle or non-existent. WRT spotting airplanes, I think that certain spectral filters and light attenuation can enhance that ability but I doubt that polarization by itself is of any benefit there.