A wrap-around display: do we even want that?

The handset has no mechanical keys and you will have to use taps on the sides of the device to control volume or sleep / wake. Glass sandwich phones are already a slippery mess, if the Mi Mix Alpha has oleophobic coating applied to all of its sides it's only going to get worse. That's fine, though, you can get a case for it... wait, can you? And what exactly do we stand to gain? OK, we can use the phone's main cameras for selfies, because there's a screen on the back, and we certainly get a "wow" factor out of it. But is there more practicality there, or the potential for such? What do you think?