A writing-only tool for the easily distracted

Recently Barnes & Noble's PubIt page on Facebook posted a link to a Writer Unboxed post, about better writing through cheap technology.  Most of the technology listed was uninteresting to me, except for the bit about the NEO — a word processing keyboard that literally just writes.  It sounds like a great little device — takes AA batteries (and they last forever), doesn't have to boot up, and doesn't have stuff like the Internet to distract you.

Of course, something like this isn't for every writer or even every writing job — with no Internet, you can't do any research or post progress updates to your blog, for instance.  The little screen would make changing something you wrote ten minutes ago, or flipping back to an earlier page to double check something, rather challenging, and I also wonder about the ability to back up — or how likely you are to lose what you've written before you have a chance to upload the text.

For something like NaNoWriMo, however — where the goal is to write as much and as fast as possible, no revising or distractions allowed — it would be ideal.  If I could find a used one for a little less, I actually might consider it — I don't think I'd get enough use out of it to justify the $169 price tag.

What about you?  Have you ever used one of these, or a similar device, and if so, how did you like it?