I have transitions lenses, and I really don't care for them. This is my first pair of glasses, and I was used to wearing polarized sunglasses. The sunglasses would be dark enough and seemed to protect my eyes. I find myself squinting to keep the sun out of my eyes when I have my transitions glasses on. They don't seem to be very good at being sunglasses to me.
I keep regular sunglasses in my purse to use, and just take off my regular glasses, so I feel I wasted my money on the transition lenses.