A Claymore could be carried in may different ways. One of the is the carry it on you back using a shoulder sheath but may historians believe that is was not a comfortable way of carrying Owing to it's enormous size. Another way is hold the grip and let the blade rest on your shoulders as depicted in many old paintings, a modified version of this is to hold the sword by the pommel and let the sword rest across the length of your arm up to your shoulder. Image for reference