i wouldn't quite call it "paper", probably the better word to use is a "print portfolio" ;p
but technically yeah, most are still printed on some form of paper.. ehhe
simply put, mostly we start online now, have a website of ur images, and when customer is interested to find out more, meet them up and show them the print portfolio. i do know that some photographers bring a laptop and show more digital images when meeting up, but if the customer requests for prints then you should have them ready too.
after all, if the customer is gonna order prints and albums from you, they'd probably like to see the final product, not just on screen.