Hmm – with OneNote 2010, this could have some Courier-like potential. See this Toshiba product page (also the source of the picture below) for more details, and the CRN article for details on pricing etc.
The Libretto W100 is an ultraportable PC that doubles as an electronic reader. It has two 7-inch, multitouch displays with 1,024 x 600 resolution, one that can serve as a virtual keyboard. The device runs on a 1.2GHz Intel (NSDQ:INTC) Pentium U5400 processor and has up to 2 GB of memory.