The modern portfolio is presented on a tablet or laptop and is little more than the PDF an applicant sent in with their CV or the website they point employers to.
That's fine, but we are in a creative industry and competition is massive. How could you stand out in a crowd? Could your portfolio be as creative as the work in it? It should be.
I'm fairly sure no potential employer will have strong feelings on what format you show your work. Although from personal experience, if you just load up your website, (we have probably already been through that), what's new to present?
So what options are there? Well, you could show a PDF on your iPad or laptop. Then there is the good old fashioned portfolio with plastic selves and printed sheets. I still quite like that method as I can get up close and interact with it rather than sit through a glorified slide show.