I don't think these aim to be covert, just to be stylish. The lenses could easily be camouflaged, like the front camera of a smartphone. With no "recording" light and an option to trigger them via discrete tap on a smartphone screen (which is conspicuously missing in the description - only a noticeable reaching for the glasses or a spoken command), they would be truly creepy.
Having just gone on a bike ride and tried to get photos, both in selfie and in rear camera mode, while also staying on the path, I totally see the point of these (social ride, so can't just stop all the time).
Having just gone on a bike ride and tried to get photos, both in selfie and in rear camera mode, while also staying on the path, I totally see the point of these (social ride, so can't just stop all the time).