The black chrome is advertised as "highly resistant" I'm considering one now because they will continue to go up and at some point may be un-obtainable. Since I have an M2, I'd like to be able to "go both ways" with lens finishes. I'm also considering which covering to get. The fancy leather ones are nice, but I assume they'll get funky w/ use...like a pair of leather pants?? What's the standard covering like? Has anyone tried the ostrich, lizard or vulcanit coverings?