Your dreams might have come true, then, with the Dasung Paperlike[1], a 13-inch e-ink monitor. The first generation connected to the PC via USB and special display drivers, but the current generation uses HDMI like a normal monitor.
My girlfriend is quite happy with her second-generation Paperlike Pro. There is apparently now a third generation[2] with higher resolution.
There are some disadvantages (of e-ink in general). It's not fast – the mouse cursor feels laggy, but typing is OK. You might have to tweak various appearance settings to make things look better in black and white – they have software to help with this for Windows, but not for Mac. Lastly, it's not particularly cheap.
She uses it at work, so I can't check now, but I think it should be OK. It's mainly smooth-scrolling web pages and the mouse cursor that look laggy – things that move continuously pixel by pixel.
They say it's "nearly as fast as LCD". It has different modes to choose from, with different trade-offs between speed and image quality. And the new generation might be faster that the one I used.
My girlfriend is quite happy with her second-generation Paperlike Pro. There is apparently now a third generation[2] with higher resolution.
There are some disadvantages (of e-ink in general). It's not fast – the mouse cursor feels laggy, but typing is OK. You might have to tweak various appearance settings to make things look better in black and white – they have software to help with this for Windows, but not for Mac. Lastly, it's not particularly cheap.
[1] http://www.dasungtech.com/
[2] http://dasungtech.com/english/detail/id/223