isn't it just as easy to save the bitaddress.org webpage to your desktop, sign offline, and then print via non wireless connection?
Best practise states that creation of private keys are done on a computer that has never and will never, see any network during its life as a Keymaker. This also goes for the printer used to print out the keys.
I (helped) fund it and managed to snag one of the original of that campaign. It will be interesting to see if any of these come to market as I haven't seen them often.