How are eDimensional ED Glasses?

[Slickone]

Anyone tried stereo 3d glasses like the ED Glasses by eDimensional? Do they make much difference? Hard to get to work? Headache inducing?

 

[Slickone]

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[Mingon]

I have used the elsa versions, you need to run at 800x600 to get decent refresh rates if you monitor is not top quality, I used 150hz to get a smooth effect. When they worked (only some game iirc) they were quite good giving a perceived depth of about 6 inches or so in UT.