Lots of guys hate anything that isn't iridium. I have a bunch of different lenses and personally don't have any problem with gray lenses. Some people don't like anyone being able to see their eyes, which I find somewhat strange as an all the time thing.
I ended up getting the SI Staright Jackets and they came with grey lenses. I have no problems with the lenses but didn't like the fit of the SJs as well as I thought. I also ordered a pair of silver ones with the ice iridium lenses. I am selling both pairs because I prefer to wear my rootbeer Fives Squared and red and grey Flak Jacket XLJs instead. I would buy the multicams if they had the rubber nose pieces but will end up ordering the matte black once I sell my Staright Jackets.