Here, in Germany, the Vision Air would be a better bet, smartglasses are a legal minefield.
You can't use them in public without getting permission from anyone in the prospective image (technically, if they are identifiable and in the foreground, if somebody is 10M away and strolling across where the image would be taken, that is usually allowed), you can't use them in offices (cameras in general are generally not allowed and with smartphones these days, you generally can't photograph workspaces, screens etc.), on some sites I travel to, even smartphones, tablets and laptops with cameras have to be put in a secure-box at the security point and retrieved again when leaving the premises.
Private gatherings as well, you have to get permission, for example, my wife tells everyone when we go to a party that they do not have her permission to post photos of her online, which is legally binding.