The NookColor will not allow people to use Kindle, Kobo, or Aldiko apps. To us here in the eBook world, that matters.
To NookColor buyers, it probably won’t: “I don’t need those, I can get books from Barnes & Noble.” And: “I don’t care if it’s not a ‘true’ tablet, I can still get apps from Barnes & Noble.”
Note that second reason was often used by iPad owners against Windows supporters!
Given how hard I expect Barnes & Noble to push xBooks (just see AliveTouch in the video below at about 2:50), some of those NookColor owners — with their exclusive Nookbooks — could wind up turning around and asking, “Can your iPad do that?”