While the standalone monitor is neat, I think the biggest use-case would still be for a portable/outdoor terminal. That being said, with MEMS-IGZO devices finally coming from Sharp/Qualcomm (Pixtronix) this year (they've been showing it off since 2013 [1], but have announced a 1H 2015 release in JP [2]) that boasts some impressive specs [3]: 220ppi, 120% NTSC color gamut, 8000:1 contrast ratio, 50% power consumption of an LCD. It is also sunlight readable and has switchable low power/low refresh grayscale and color modes.
It's not bistable, but is looking like a really good e-reader/tablet option. Personally, I'm still looking forward to the revamped SMI Mirasol [4] but that's probably years out... (basically, the perennial story of cool display tech)
[1] https://www.youtube.com/watch?v=wGVKRTosykg
[2] http://www.sharp.co.jp/corporate/news/141006-a.html