I wear them, but honestly, on the vast majority of my rides, I sweat so hard that they all cloud - I can even fog a top-end Oakley in less than 10 minutes of riding, rendering it's fancy optics useless.

After learning the hard way that I'm simply too profuse a sweater to do justice to any great optics, I've now bought lesser-priced sunglasses preferentially, as they all look pretty crappy once you've got sweat smeared and spattered all over the lens. Tifosi is my new 'hi-end' sunglass - anything over that is a waste of money for me due to the sweat factor.

I totally understand how someone for whom sweat staining on glasses isn't a huge deal would love the high-end optics. They're quite good, and if I didn't sweat like a hog, I'd preferentially use the expensive stuff.