I have three pairs of Wiley-X's. All prescription fitted. They are the 480 degrees (discontinued, bought the frames at Meridian Tactical for like $30 or so and paid ~$180 for the mirrored precription lenses (these were my first pair, about 2 1/2 years old)), the newer 180 degrees and XL-1's I purchased last year while in Iraq. The 180 degree frames were used with clear lenses for just regular usage. The XL-1's are fitted with the slate tints in them for convoy riding. Yes the XL-1's will fog, I had that problem but it was fixed with some dial bar soap. Applied and wiped off once a week, they kept my eyes from tearing in sand storms.
I had the SG1's issued but I scraped those. I didn't like how those looked and felt when I wore them.
I love my 480's. I wear them while driving on a sunny day and haven't had any issues with fogging. They are not goggles though. I wear the 180's during night and rainy day driving (whenever its not sunny.)
All the Wiley'X's I have are cured. Not the traditional sense of eye fashion. So I have a pair of regular frames made by Kenneth Cole I believe. Looks more 'normal'
Their customer service is A+ too. I dealt with them on numerous e-mails and phone calls, very polite and sent me a replacement for a broken eye glass hard case.