My understanding (based on creating QR code templates in Wikipedia and discussing this issue some months ago) is that Wikimedia does not own enwp.org. If this has changed or someone is prepared to negotiate with the owner I would like to know as this might be of immediate benefit in how QR codes can be shortened as currently best practice forces us to not use it as an official redirect method (though I use it informally as below).
Thanks, Fae -- http://enwp.org/user_talk:fae Guide to email tags: http://j.mp/faetags