A little update.

I've been displaying the Origins He-Man with the MOTUC Filmation swords because the handle of sword that come with the figures is too big. It turns out the MOTUC weapons are also a little too big and stretch out the hands. I compared the extra included hands and it looks like the grip is actually scaled for vintage MOTU weapons. I did a hot water dunk and squeezed the figure's hands back to the grip of the extra hands and it holds vintage scale MOTU swords. I'm now using the MOTU commemorative Power Swords for display.