I finally decided to check this out thanks to this OT. It's not a bad show, but I keep on comparing it with AoT, which ruins everything. I'm a fan of AoT, warts and all, and Kabaneri to me feels nothing more like a shadow of AoT--a very pretty shadow at that.
It also made me realize what really makes me love AoT--it's the world building, the mysterious and imposing walls that get breached, the horror of the titans. The rough art and utilitarian character designs really add to the post-apocalyptic atmosphere of the show. It was easy for me imagine how scarce resources were and how badly the people needed to reclaim the land beyond the walls.
Ultimately, what disappointed me about Kabane was the lack of a sense of dread. There was not a single time that I genuinely feared for Ikoma's or Mumei's lives. Contrast that with AoT where I felt a great sense of dread and unease from the very first episode.
The good thing is that I can see Kabane of the Iron Fortress truly setting itself apart from AoT as the series progresses. It may not be my idea of an ideal post-apocalyptic world, but it does make for a great action show.