I have 470's in SLI and using sterioscopic 3D vision. I don't play at ultra settings. I use High settings and getting between 45-60 FPS (I have v-sync on).
However, this is a little different than anaglyph 3D. 60 FPS in 3D vision feels more like 120hz without as your brain does get 120hz distinct images alternating between eyes.
I have never tried anaglyph, so I can't describe the difference, but I can tell you that 3D vision looks quite good. The only issue in Skyrim is objects in the water. Objects visible that are underwater will not be drawn in 3D vision, which results in them looking at the wrong depth.