It is now possible to provide a one-time permanent enhancement to custom-fitted (The NPC providing the service has to be the same one as the one who made the armor).
These bonuses range from skill modifiers to saving throw modifiers.
This is relatively costly but provide a way for PC faction-leaders or PC factions who make their own outfit to have a bit of a bonus should they decide to invest in it.
Report any bug/oddities associated with this (if any) and enjoy!