A membrane "smart vapor barrier" is employed to control air leakage and vapor diffusion from the interior. You need to protect the membrane - that's what the strapped wall horizontal framing does. And you have to be "fastidious" on the air sealing of the membrane. This gets tricky between floors and at punched openings - but it is doable. And here is the good part - no caveat climate zone wise. You can go to ugly cold places with this. Just remember the "fastidious" part.