Soldato
Same here, have the AMVR facial interface, and when someone with glasses needs to use the headset, I have to completely remove the facial interface to adjust the depth. Whereas the stock facial interface has buttons to change the depth, which is much simpler.
I don't get any issues with light leak though, and it's much improved enough over the standard facial interface, for the adjustment issue to not make me go back to the standard one.
I find that the bottom adjust is a lot 'looser' than the top to the point that I grab the bottom of the interface it'll pop out, where the top is an interface off to adjust..