haha i'm not a gamer either and i'd love to have the monitors run on HDMI but my GPU only has one HDMI port. also with one of the window managers i use i like to have multiple monitors instead of just one big one. helps me keep things orderly a little better. from what i've read, displayport is a bit better in terms of image quality too, not that it matters since this machine will never see a video game so long as I have it.
primarily i just want to be able to switch between the systems and use a single setup instead of two keyboards, two mice, and four monitors like i do now. being able to transfer encrypted stuff to my personal system, click a button, and start cracking hashes would make life a hell of a lot easier than it is now and will streamline my desk from chaotic neutral to chaotic good.