I've watched three episodes. I'm kinda disappointed that National Geographic has resorted to "Reality TV" in the overly dramatic, let's get together some people that will start fights sense.
Brief review from my perspective: The interesting bits about the actual armor, jousting, horses, etc are just barely enough to keep me watching despite the utter juvenile drama and chest pounding testosterone displays. Put an ape suit on the main character and just have him grunt a lot and you really wouldn't lose much content. Ok, I'm being slightly unkind... but not very.
The one thing that both impresses me and makes me think they are daft at the same time is they are using full on hemlock poles (maybe 2" think at the point) not something like balsa wood or another super flimsy material.