I sure ain't YULitle, but: I think you answered your own question: They are not the same thing. A setting off awl specifically has a thick shaft, and a blunt, rounded end. The string mover tool has a hook to provide more leverage. The setting off awl can be used to quickly stab at the string bed (for lack of a better description), whereas the hook is most often used to pull a single string. Neither of these are really necessary for the vast majority of stringers out there, and for my work flow, would be more of a hassle to use rather than not.