The outer AR is prone to scratching but coupled with an inner AR coating, the crystal literally disappears. If you compare the PO or a Breitling to a non or inner only coated crystal, there's a big difference. I personally love it and it can always be removed from the outside of desired.cheers. I don't know why they put the AR coating on the top surface - must be a common problem, I have a 15yr old seamaster that to my knowledge doesnt have the coating and it has survived the 15 yrs without any marks. I wonder if it's really necessary... anyone else have experience with this?