But reality is never as perfect as the design. It seems to me that being able to "stand" in a rendering and look around is going to put you much closer to reali

But reality is never as perfect as the design. It seems to me that being able to "stand" in a rendering and look around is going to put you much closer to reality than looking at blueprints and a front elevation. So i don't think the question is "could VR and the end product be different" it is "is VR closer to the end product than other options" and I think the answer is likely, yes.