It definitely doesn’t work with mine, just a black pair of Ray-Bans. I just tried it again to make sure it hasn’t changed with the latest update. I use my phone as an offline GPS for hiking and it’s been a constant frustration for me, as there is a significant delay before it gives you the keypad after FaceID fails. I’ve tried setting up an “alternative appearance” in FaceID with my sunglasses on and it just complains that my face is obstructed.

The "trick" for this to work flawlessly (at least for myself) is to set up regular face-ID; and then setup an "alternate" appearance with sunglasses or whatever other items/accessories might cause problems.

Never had any issues; especially if you setup the alternate appearance with a mask / partially obstructed face.

If I designed the system, I would be continuously training the FaceID model to account for false negatives based on a correctly entered PIN after a failed FaceID unlock.

When FaceID was announced, they also said it should also continue to work with varying amounts of facial hair - which I have also found to be true.

FaceID works off of infrared light, so if your lenses don't block those wavelengths, it works.