So the word is that X-metals will go away in the future. Do you think it would be a good idea to pick up a few extra XS lenses now? I plan on keeping my shades for quite some time. Do you think replacement lenses will be available from Oakley in 5-10 years? For me I prefer OEM Oakley lenses, I do not like aftermarket. Is anyone else stockpiling a few extras? Would it be a good idea or silly. you also would also think if still avail in 5 years it would cost more too? historically can anyone tell me if it is worth it to but now rather than later?