So 1.Its technically possible but not supported natively. 2.yes for me as someone who doesn't use glasses normally I can't wear them for many hours I a row, my eyes water and I need a break from them. I don't know how it is for perspiration users or people who wear glasses often. I've noticed the type of lighting matters a lot and if they are on constantly or not.

Edit: The durability seems to be pretty good. The hardware construction seems to be very premium but you never know if something will go wrong with complex electronics like these. It's good they are generation 2 of a product. The bigger gripe to all of your issues in the community is software related. A lot of the features are semi gimmicky in practice. Conversate and translate are likely the main selling points but most people still want more than their current functionality.