For me personally I don't see the point of this round at all. I really don't know what problems it solves for any normal use.

If I was guarding a post in some sandbox country, yeah, absolutely. If you really want to make sure the bad guys go down on the first shot, then sure. But outside of that kind of application it doesn't appeal to most people (or at least me).

Unless I'm totally missing something this is a niche among niche cartridges.

It might appeal to those people who just want a lot of horsepower but all things considered I would not want to get into this thing and especially what appears to be a reliance on specialty factory ammo.