Engadget had the opportunity to play with a NEC dual-screen Android Cloud Communicator LT-W at CES 2011.
The journalist didn't seem to be impressed though:
Unfortunately -- cloud or otherwise -- we didn't come away with a very positive impression of this thing. Our very first red flag was the stylus, which matches up with a pair of 800 x 600 resistive touchscreens that don't seem particularly bright or contrasty. Some of NEC's sample apps (which you can see in the video after the break) make decent use of the dual display setup, but nothing blew us away -- and more importantly, everything seemed just a little too jerky for a Cortex-A8 core.