Looking at the marketing pages for the two projectors mentioned is hilarious. They show images projected onto brightly-lit white walls with areas that are significantly darker than the wall, which is of course impossible.
Unless/until some material comes along that is tuned somehow to only reflect light that comes from the projector, they'll have to remain limited to dark rooms.
That video demonstrates the problem exactly. The "before" shot shows a clip from Lightyear which takes place in the black of space, and the screen is filled with high-contrast bright colors on a completely-black background. The "after" shot is of a bright sunny day where a car (low contrast despite the bright red color, to my eyes) drives through a desert. You could hardly ask for more directly opposite videos. For a real comparison, I'd have liked to see the same Lightyear clip on both setups.
I wasn't talking about visibility. I was referring to the marketing pictures showing the projectors essentially "projecting darkness" which is impossible. No part of a projected image can possibly be darker than the surface it's being projected onto.
Unless/until some material comes along that is tuned somehow to only reflect light that comes from the projector, they'll have to remain limited to dark rooms.