if it is stacked screens, I don't see any reason it will work horizontally only. I believe the view angle is still very limited. I'd love to use this for Skype chat or something.
If the lenticular lens is made of columns (as those fake 3D postcards are) then only horizontal shift is 3D-able. To display verticality, the lenticular lenses could be hemispheres. However, to encode vertical 3D-ness you would need 45 images for each 2 degrees off the horizontal so as your head bobs up and down, it can pick up the off axis images. So that's 45 images x 45 axes = 2025 images per frame.
