The way the hands are preposed it limits the poses that look as if he just swung the sword. And since the sword in the right hand looks cool going down I wanted consistancy and posed both swords going down from the hand. It'd been easier if he had pin elbows but they are diagonal cuts at the elbows like the Star Wars figs.
Basically, with his arms bent (IE right arm) its not really possible to pull of a respectable slashing pose, but a "waiting to slash" pose is easily possible (IE right arm again). But with the arm stretched out (IE left arm) and the sword going upward from the hand it comes off as a stab rather than a slash. But having the sword go downward from the hand it looks more like a slash. And I doubt the Immortal's use orthodox sword fighting, its pretty much hack and slash, so it suits it well enough for me.