No problem reading my Garmin in polarized lenses. Still, I mostly used non-polarized photochromatic lenses these days and ride a lot in the dark or in shifting light conditions. Also, I've found that polarized lenses are often too dark for me while riding. Many sunglasses have too much light blockage for me, which can make it hard to see if the lenses are sweaty and I'm riding in mixed light/shade. This is another benefit of photochromatic lenses for me: they don't get as dark as most traditional sunglasses.

But does it stick to both the horizontal AND vertical parts?

I like polarised lenses for everyday use but not for bike riding. There are plenty of good sunglasses that provide UV protection and help reduce bright sun light

Friendly greetings newbie.

I know you just responded to the forum algorithm of suggested threads, but this is a Zombie Thread Walking, last response in 2021.

Nevertheless, important subject.

Polarized: If you ride much into the sun, most especially with wet road, polarizing will drastically reduce the sun reflection. Also great on snow.

Bargain sunglasses: Always bring to an optometrist or prescription eyeglass vendor, they can quickly check if they block UVA and UVB rays, important. Before I needed prescription lenses, the absolute bargain was to stop by ye olde welding supply shop, who had safety sunglasses (so sideshields also dark) with changeable lenses in medium smoke (gray) and DARK smoke and clear lenses for another $2 each (prices are circa 30 years ago). The darker than usual dark lens was fabulous for really bright sun and indispensable for snow skiing in bright sun. All lenses (polycarbonate) checked ok for UV blocking, so I never biked without glasses, clear for cloudy days for both UV and object protection.

A thread back from the dead! It just goes to show you how polarizing the subject can be. Or not.