I wear light weight plastic lense progressives in half frames. Except for the first few days of wearing glasses ( I didn't need glasses until I was 42 ) progressives have never given me problems on or off the bike. I buy frames that come with clip on sunglasses so I don't need a second pair of prescription sunglasses.
What turned out to be a major problem for me at least are polarizing sunglasses. All the lense manufacturers polarize their sunglasses. In both my car and my bike I have found that when the sun is in front of me, the polarizing makes it impossible to read guages. Also, polarizing lenses make LCD readouts such as the K bike clock look all black. For months i thought I had a clock that was failing intermittantly when the only problem was the polarizing sunglasses. There was other weirdness such as black granite rock looking green or purple depending on the angle of the light, and white cars looked pink. It was like wearing psychodelic glasses.
The worst problem with polarizing sunglasses was that under certain conditions when looking almost at the sun, traffic disappeared. You are basically blind. On two occasions, once on the bike and once in the car, I pulled out from side streets directly in front of cross traffic I simply could not see. Both times the car drivers saved me from tragedy, and I felt like a dolt.
Now I have my optometrist order clear, unpolarized lenses for the sunglasses and he tints them on site to a neutral densitiy gray like that used in military aviation glasses. I think polarizing lenses are dangerous and should not be worn to drive. Ever.