I know he wouldn't be into the scimitars at first, but remember he got captured at 18, and now he's 35. that's why he has a pseudo-arabic name and uses scimitars. and he's not really dual wielding the sword and chain. he just has the chains strapped to his wrists, and in the middle of fighting, he might happen to swing one at his opponent's face since he doesn't have a shield. he could also use it as a flail, wrap it around their sword and pull it out of the way for a quick slice. (some of these are a little improbable, but it's not really the dual wielding i'm arguing, it's using two swords, not necessarily simultaneously.) He'll probably just be ambidextrous, and once one sword is broken, or flung out of his hand, he switches hands and swords.(which would give him an advantage)