I don't know about you lot but when i get together with my family/brothers/friends and if we decided to have a game of say, COD. Usually their isn't enough control pads to go around, resulting in people watching/cheering you on. i don't see how it would be possible for people to watch, i assume it would be like looking at the Scanners off "a scanner darkly"...
Although this would remove the old problem of Screen looking!
but because of the lack of spectators and the fact that you will need the specs ( i already need to ware one pair of specs to be able to see HD, wearing 3D specs over my specs is just annoying) i think i would give this a miss.
3D stylish proper specs to help people see from specsavers that can sync with multiple 3D devices, now thats something you should invent sony!