This is getting close to what I would want; I would like it even better to just have eInk on one side and amoled on other permanently. I would probably get two and add a hinge between and hack some android to get to my perfect phone / tablet. Although the battery is pretty shite; 2x6k would be better for my ultimate wet phone dream.

I'd get a foldable if the "exterior" screen was eink (and it didn't cost $1500+)