I love the idea of smart glasses, and would happily buy them. However, it'd 1. Need to have 3rd party app support and 2. Be able to work without connecting to any tech company's servers. I've gotten used to my android phone that doesn't have google play services, and I'll never go back to having a device that phones home without my permission. In a perfect world I'd like to have some FOSS firmware and OS to run on them, but I'd be willing to go without as long as I could disable traffic to all major tech company servers.
Unfortunately these requirements will likely mean I won't be getting smart glasses any time soon