I have been wearing smart glasses for several years now when out and about. Not ray-bans but echo frames. Yea, the only real issue is with battery life, a little over three hours, the third gen will be released soon with the promise of six hours of battery usage. I think they are worth it. As far as looking suspicious, nope, more like a nerd.
I wear them at work where earbuds are not allowed because smart glasses are not that common yet so management don't know what they are. The biggest bonus is, nothing is jammed down the ear canal. In the end, I do believe the benefits outweigh the cons.
I have had them for a couple of days and I am quite impressed with them. Sound and image quality are excellent for this application. I love them and will have great fun with them. Waiting for that "jump over the counter moment". Good for any instant action that just must be captured. Bravo Ray Ban.