Well I finally saw it a couple days ago. Regular screen/ 3D.
I am very sad to report that I am truly disappointed.
I am disappointed that Cameron did not come up with his techniques 30 years ago!
Terminator, The Matrix, Star Wars... all shot like this. Hell -Minority Report, or the mother ship: Blade Runner.
I was blown away, and hope that Cameron gets very rich, - selling this technology to ever film maker on the planet.