Technology

I probably wouldn't use them in any form for what they want to do with them, not a fan of plugging in that hard, but I could wear them for extended periods of time no problem. Can play video games with the big bulky Valve Index for hours on end without a break, I doubt this AR set is much heavier or hotter. Any sort of exercise would probably make it way too steamy to be reliable though.

Would be cool to get some sort of advanced vision system to augment my poor vision though. Start looking like I'm from Star Trek with that sweet visor.

No, display glasses would have been the right form factor for Apple. But offering some cool sunglasses with monitors would not create another walled garden for them and the temptation to just own everything a user sees is just too great.

Headsets, no. They weigh to much and every damn gram counts. Glasses, sure

I use a headband to keep my hair backwards and even using something as light as that becomes irritating after prolonged periods of time. I'd have to try it, but I'm leaning towards thinking I'd be super annoying for extensive use.