I've shot and hunted for 30 years with them.  As stated before.....they have their issues.  My complaints are when it's raining or aftervive been hiking hills for a long time and I get the fogging on either side of the nosepads.  I just carry extra hanky's for drying em off. 

I guess I'm one of the lucky ones.  It when it comes to eyesight cause mine was terrible,  it when it came to wearing glasses. I'm 63 now and I started wearing glass in 4th grade. Had lousy eyesight. I never had any issues when it came to shooting and hunting with glasses. When I finally went to bifocals at about 50, all my friends talked about falling over themselves with bifocals. I never missed a beat. I work construction and could still get up and walk a 2x4 wall setting trusses. I will say the one thing I did have a problem with and that was the fogging up with a headnet. So I just rarely used one. Then 6 years ago I had cataract surgery and can see better than ever before. It's great.