I have had a pair of Swarovskis for over 15 years, the first thing I did when I bought them was throw away the lens covers and the box. I use my rainsoaked wool shirt to clean them if thats what I have, mabey some toilet tissue, I have used candy wrappers and newspaper. I figure the time I saved looking for the lens tissue to clean them properly (1,247,981 times) has saved me a few weeks of time which I plan to use on a moose hunt in the future. I sent them back to Swarovski last year for a checkup and they sent back a nice little pamphlet on how to properly clean the lenses. (along with some lens tissue) I have compared the same binocs sided by side with flawless (not scratched) lenses. I can tell no difference.
I DO use proper lens cleaning techniques on my video equipment as dust and scratches WILL show up on DV footage. I also attatch clear filters over my video lenses to "take the fall" if a scratch does happen.
I think the upper end binocs should have the same threads on the larger objective that you can screw in $5.00 filters you can toss once a year if they need it. They could also make UV and polarized filters.
So if anyone out there is a Swaro rep (or zeiss, or Leica) and you want to make some prototypes I will be glad to field test them for you (Free of charge too!)
When I film in the New Mexico red dust I constantly use compressed (bottled) air to initially blow of a video lens before I wipe it. Its very powerful and effective. You can get it in electronic and photography stores. Wish I had though of selling air in a can!