Yes, there will be QR codes everywhere. But I don't have plans to implement a QR reader in Armory unless someone basically does it for me... it's annoying to type in paper-backup stuff, but it should be a once-every-3-years kinda thing for most users.
It's true that that's the use case, however I believe there's one other important use case: testing the system in order to feel comfortable with the process. If someone puts their savings into their armory wallet and prints out three pieces of paper, the first thing they're going to want to do is try to restore the wallet from the pieces of paper. The QR code makes that much easier. To be fair, I did that test by typing in the words, and it wasn't that bad.
It's also important to keep in mind the most likely failure mode. For instance, you could have a fantastic cryptographic system, an unhackable password, and a netbook that's completely isolated from the internet. And then the cable guy could slip a keylogger in your usb port, copy your encrypted wallet file, and come back a few days later to fix your router and take your password. That may be highly unlikely at this point, but infinitely more likely than somebody breaking a 160 bit password.