I’m not sure I can think of many practical applications for these devices.
Even using them for movie see through screens instead of CGI to save money probably wouldn’t work due to not enough contrast under bright studio lights. They tend to CGI phone screens now.
The one theing they would be great for would be some kind of HUD style thing for whatever is behind the screen, but that would either be a vague info bit off to the sides or it would need to track the location of the person’s eyes and what they were looking at for anything more precise. At that point it would be better as glasses/goggles.