A couple of points. If you're a fan of Frazetta's image of Conan, or if you're a fan of any of the graphic Conan novels of the 80's & 90's, this might prove to be a better Conan than Arnold ever was - that is, if you're a purist.
The other thing. I went back and watched Jason Momoa in Stargate:Atlantis. The size of his arms going from SG:A to GoT and Conan is freakin' ridiculous. All I'm saying is that it might be a good thing they don't test for steroids in Hollywood.