Good for Qwiki! That site blew my mind when I first went to it. I've showed it to a bunch of non-techies and they all have the same "woah!" reaction as well.
I see it won award from TechCrunch, which describes the site as disruptive. The interface, while slick, seems like it would be an interference to any practical usage.
Is there more to it? Genuinely curious.
An analogy could be: A student watching a video lesson in the classroom verses (or in addition to) reading a book.
People are different in the ways they consume information and learn things.