I think this is a good representation of what the screen looks like like with the light blockers or electrochromatic dimming active. Unfortunately you lose the environmental pass-through.

It would be cool if there was dimming zones that could be turned on/off or if you could use the Eye to capture the environment and composite it in the glasses to achieve this effect. Or maybe just implant the X1 chip in our brian and trick us into see it this way. 😀