I have found my favorite X-metals. XS. So much I don't even wear any of my juliets anymore. But my question is, do you stockpile lenses? At some point they may be harder to get OEM Oakley XS Lenses. I want to make sure I have a few in reserve. Does anyone else do this? I guess worst case I can always go after-market. What you you guys do, if anythng?