And the portfolios were immediately relevant to the position being sought. They didn't buy expensive gilded frames in handsome hand-carved presentation boxes to display the photos. The medium was very literally the message. Just like the OP's example of his applicant sending out fully-realized letterhead/business cards.
Unless he's applying for an iPad developer position (in which case, the company would have iPads at the ready) then he's confusing sizzle for steak.
And unless he can single himself out in a way that's relevant to the position being sought I think it's a huge mistake. He's just going to be referred to as "that iPad guy" and not in any endearing way.
Exactly.
For any developer position I've interviewed for they ask what apps I have on the app store, and then I bring an iPad in on my person.
For my last interview, do you know how many times that iPad was actually turned on? 0. They were much more interested in me than what I had on my iPad. If they could find out what I knew from me, they certainly didn't need my iPad.
(I'd still bring my iPad to an interview for this sort of position, but the iPad is a supportive device, not the cornerstone of my interview.)