The only real usage I've seen is on Instagram reels etc. where people are using them in red light districts like in Amsterdam to film the women.

I've seen a plumber use it to document a repair that he was doing. Being able to record in tight spaces seems to be a good use case for this tech

I've also seen a home inspector use them to document issues with a new construction

There's also a ton of people using it for cooking videos

I have them and like them. I don't wear them constantly, but on days when I'm doing something interesting, they help me document much more than I otherwise would.