This is quite logical and I've been wondering--isn't this at odds with (future) dual SLI one-eye-per-card techniques? Would it make sense for dual SLI VR setup

This is quite logical and I've been wondering--isn't this at odds with (future) dual SLI one-eye-per-card techniques? Would it make sense for dual SLI VR setups to go back to the old "card 1 renders the top half of the screen and card 2 goes bottom"? Then you wouldn't need 2x sized framebuffers.