I'm in a wait-and-see mode. I think I would be more inclined to go with a reader if there was more content available. I like the idea of managa and/or comics on them, but I don't like the idea of doing conversions and scans and reformatting and whatnot. I see myself doing it during the initial gosh-wow-oboyoboy phase of owning the device, then thinking it's too much trouble.
I like the Fujitsu and Eink protoypes, too.