There is definitely variability even among OEM lenses. That frame of mine I referenced, the OEM fire lenses it had fit perfectly, the OEM ice polars I put in were the issue, and at that, the right was fine, the left was slightly loose. Recently had a VR 28 BIP, right lens was fine, left lens was too big! Couldn't get the orbital closed at all! Lens had to be trimmed to get it to fit. So far I've only used OEM lenses in all my frames, there is most definitely some variability.Yeah I'm eager to get some extended time with them. I will say that clarity seemed superb this afternoon and contrast in the snowy conditions seemed good.
Interesting idea. I don't believe this should be necessary though. The OEM Ducati lenses were snug and the frames are in great condition so they should be tight if the lens is good.