One thing I noticed about the Guard Dog models is that you can special order certain models with perscription lenses! I wear glasses.. and need to if I'm ever going to see an enemy player from a distance and that almost sounds like the perfect solution. Now if only they were dual-pane thermal lens like the Pyramex I-Force:
http://pyramexsafety.com/products/eyewear/SB7010SDTI have a pair of these and it looks like the have all the proper safety ratings and they are full seal. They didn't do well with preventing fogging back in January at MRP, but I've had better luck with them during Spring and hopefully Summer. If only they were prescription capable!
I'll post a review after I've had a chance to run them a few times later in August!