I'm thinking about buying this thing, but I hate putting more crap in my bag. I already worry about a heart attack every time I go through an air terminal. I *must* take a laptop when I travel, and I'm a glasses wearer, and every time I head out, I have to take my regular glasses, plus a backup pair, sunglasses and a backup, and reading glasses. That's five pairs of glasses alone, plus I like to take sound-canceling headphones, an iPod, etc. A lot of junk.
I think the ultimate solution, other than for hard-core trekkers or people who go deep into the third world, might be on-line storage. Most hotels, even third world hotels, can sell you 24 hours of internet pretty cheaply, and you can upload a lot of stuff if you run the computer all night. B&H is now selling 4-gig Lexar cards for $78, and if you buy one card a month, you'd have a hundred gigs in a couple of years...a hundred gigs plus occasional overnight up-loads ought to see most people through a trip.
JC