Yeah, i wouldn’t think it means something that the pommel looks different for the pilot either. It was just a change they decided to make and it seems to be the same sword otherwise. And since it is just the pommel maybe it is something that was clipped over it to make it look dressier when they were in the castle being all the leaders and such.
I do always wonder though in Ep 2 during the wedding Charming throws the sword and it follows the Evil Queen through the smoke and imbeds in her castle wall, but then Charming has it back for all the other scenes he is in from the pilot, so i would like for him to have gotten it back somehow. So that it is in fact you know “your father’s sword” as Rumpel said and not just one of many, but it isn’t that important.
Charming could have had another sword from the wedding until the curse and that could be a couple years if they want it to be.