[Sphex]

I've never used dudb before, but just make two "Int's" in the file called "HaveSkin" "SkinID". HaveSkin will be 0, and SkinID will be 0 too.
If someone saves their skin, HaveSkin will be 1, and SkinID will be their skin ID.
When the player spawns, check if HaveSkin is 1. If it is, then change his skin to SkinID.
Good luck .