Thanks for your informed comment. I was going to say something similar about the Magic Leap, except from a background with less knowledge.
Last month's Wired article on Magic Leap says that they've got the magical depth focus problem solved. Unfortunately it's frustratingly short on details. So I don't think we'll know for sure until it's actually released, but if this first generation of Vive/Oculus doesn't solve the issue, whatever generation that Magic Leap ends up being in might.