That'll be interesting. I suggest splitting off the pauldrons, faulds, couters, and any other piece that should really be stiff and jointed. Rig the underlying body with standard body parts (that makes it easier to take poses and use walk designer). Then, rig the "flapping bits" as independent body parts, using ERC to slave them to the underlying limbs. That way, you can keep the stiffness and shape in them, yet allow the basic body to bend properly. Remember, in Poser, it doesn't matter where the cut is between two pieces with a joint -- it matters where the joint parameters are set. It really is not possible to get an overlapping effect like those thigh pieces without adding some extra body parts.