Depends upon how Epic sets it up.
Personally, being able to give away skins for free, especially past battlepass skins that are exclusive, would be cool.
I know I have talked with couples on Fortnite that wish they could give past battlepass skins to each other since they didn’t play during that season and really like the outfit/skin.
*I think being able to trade/giveaway skins for free would be pretty cool. Especially if 2 Factor Authentication is enabled to prevent from skins/items getting stolen.