I just tried with that glasses. Nvidia card, everything nice and smooth.I had some troubles adjusting brightness because didn't know how to bring up onscreen configuration. It's correct said, size is the same as 19 inch monitor from one metre. There is two bad things - lens are not perfect, there is blurring on down part of image, and edges. Screen looks like it's stretched by edges (like crt-monitor looks oval, but vice versa). Second is focus distance, i couldn't focus good to read text from same distance as from normal monitor, like it's made for ppl with myopia.
There is no more ridiculous ghosting (from redblue anaglyph), and distortions doesn't gets ur attention, so you don't feel like you watching two monitors. Stereoeffect feels good when you looking around car, and nearby road, but in distance it's hard to determine real distance (like in real life). On training course i start feeling size of car, and no more broken objects etc.
Only one thing i didn't like is headtracking. First it's hard to calibrate. Second it's hard to configure. After a while i finished up by virtual joystick program that changes mouse cursor position as it's x axis of joystick, and yawing of head as mouse x position (setting joystick axis as head rotation hadn't any effect, only setting mouse..). But it's very hard and i think unnescessary to move head for looking around since it's hard to get to correct course, so i removed that.
So they are not perfect, but they much better than annoying anaglyph. Only problem they requires nvidia card to run any kind of game without native support.
P.S. They are 640x480, but i don't think bigger is needed, lens are not perfect and that pixels will be just lost