You can add after "Weapon Skin" and after "Skin" PaperdollOptions and EquipmentOptions. When you Equipped "Weapon Skin" you can change with "Weapon Skin" your "Weapon" paperdolls or"Skin" and you can add event when you Unequip your Weapon, Unequip your Weapon Skin maybe should be a way without source edit. I'm added "Premium Item I" and "Premium Item II" for that. Directly hide paperdoll is impossible i guess there is no option (You should write your Custom Code). I guess you should add your custom code to there: