Keltec PR57 - WHAT IS THAT?

Keltec, a firearm company known for making some unique design choices that has led to criticism and disbelief before, has announced the PR57, a pistol that does not have a removable magazine, reloaded by stripper clips, with a rotary barrel and front locking lugs. It's definitely a different design amongst a sea of polymer Glock clones on the market, but does it have any real viability as a pistol?