Transflective LCDs, a.k.a. RLCDs, are currently being sold.
There are two iterations of Sun Vision Display's 32 inch monitor, and Eyemoo recently released an Android tablet with an RLCD sceen.
I have the Eyemoo Epaper S1, and an very happy with it, despite a manufacturing flaw that caused a few sparkly dust specs to be between the screen layers. I use it with the built-in frontlight at 10-20% strength which is a good compromise between brightness and comfort.