well i think that james had no use of it for when he left the school and gave it to dumbledor who then gave it to harry and if you notice in the two little parts that psyduck left for us up there that it does not say that james wanted to give it to harry he didnt even know he was to have a kid yet so he left the cloke with dumbby and when harry got to the school he gave it to harry casue it was rightfully his in the first place so thats what i think