I dunno the magic that happens to make the ED glasses work - they hook in at the graphics driver level I believe, and they do make AH display two time-interlaced images from the left-eye, right-eye perspective, which are then channeled to your eyes with synchronized LCD shutters. However the LCDs don't go completely dark, so there is some left-right crosstalk, and you lose 50% of your screen brightness. In return you get a true 3D feel for your cockpit, which is cool. However you only get depth perception out to about 10 meters even in the real world, so very rarely do you get a 3D sense for anything else, and it doesn't help you in any way. I find TrackIR indispensable for situational awareness and immersion, but 3D is just a nice-to-have.
That said, with my snazzy new(ish) monitor, maybe I should hook 'em up again and see how they do with the brightness cranked all the way up.
Cheers!
Paul