Electronic paper charts (Eflybook efb-1)

Does anyone here use the eFlyBook EFB-1 (which is essentially an iRex
Iliad w/ charts) - or the like?

I'd like to get an idea of how practical it is. I saw a demo of the
consumer (non-aviation) version, and the page turning seemed slow.
Though it might be acceptible if it's organized well enough to go
straight to the page w/out menus.

Does it adequitely replace VFR sectionals? Since it's not color, I'm
wondering if it will significantly compromise on the time it takes to
interpret the information.

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PM instructions: caesar cipher the alpha chars in my addy (key = +3).