[saurik]

You have to actually then coat it with anti-scratch coating, you have to make sure people carefully clean the device in ways that don't destroy this coating, and the result--as you admit--still gets scratched, and routinely it is these scratches that cause me to eventually get new glasses. I don't think "treat this device with the implicit care that you treat your primary pair of glasses" is fair, as even if I carry around a second pair of glasses they tend to get scratched as they don't have any of the automatic protections my primary ones do (due to being on my head or only put down for limited periods of time).