Impressive but gimmicky. Reminds me of those full wall pictures one could get a few decades back, and maybe still can. "Oh wow we are in the Pacific Islands doesn't it look great." for about 6 months. Then "Oh, yeah, looks a bit naff doesn't it, maybe I should replace with normal wallpaper." thereafter. I think for most folk, especially those with smaller rooms, this sort of thing is better in a frame hung on the wall.
Also, i wonder if you have to look from a certain angle for it to work? All of those pics are taken with a certain angle, and if you are shorter/tller you lose the effect?