Welcome to the Fashion Spot, Guigi!
That's the first time I've heard that and it makes perfect sense to anticipate something like that might work. And I think someday something like that will be the standard ... with some tweaks. I'm thinking that if everyone is carrying an iPad and we have apps to exchange info on the spot it might be useful.
But then ... most of us have portfolios on line, anyway ... in addition to a physical one. So if most of the time, nowadays when a prospetive client or anyone else wants to see your work when it's not a planned appointment, you just hand them a comp card or business card so they have your web site and can access your portfolio anytime and anywhere they want.
As far as using the physical iPad as the "portfolio" ... I see some uses but with issues:
Right now, it might be great for networking events, but would you want to pass it around the room? I'd be afraid it would get stolen. Yeah ... a physical portfolio could get stolen too ... but I think there's more danger of loosing an iPad.
Sometimes you get an appointment with someone to review your portfolio ... but they are usually across the table from you so you'd have to hand it off to that person and they would need to operate the iPad, if they know how. It's a bit rude to stand over them as they view it ... so you would not be able to operate it for them. If they don't know how ... it would be very awkward for them which is not good ... you want them to feel very comfortable while viewing your work. So ... it would depend on who was doing the looking .....
Often you won't even be there with your portfolio ... you would just "drop it off" for review. How would you handle that?
Sometimes, portfolios need to be sent (shipped or sent by messenger) to prospective clients. How would you manage that? Ship it and insure it? What if they never send it back? And what if they don't know how to use your iPad? Then they can't even see it.
In fact, those stylists, photographers and Makeup artists who have reps have more than one portfiolio ... thier agent needs one or more to send out to clients too and you will always want to have an original in your possession.
So, I'm thinking that it's a bit premature to have an iPortfolio for any other purpose except to carry it with you all the time, just in case you meet someone who you might want to show it to. Not too practical for the way business is being done now ... but who knows what the future will bring?
Also, consider that some of the decision makers are not as tech savy as the younger people. ... it would be a shame to intimidate them with something they can't operate ... and as a result, loose the gig.