In the game I'm currently running, one of the PCs - a mortal human - got taught how to maintain enchanted items. In terms of game mechanics, we decided to treat this as a single point of refinement, granting four enchanted item slots; picking this up also cost the character her pure mortal refresh bonus. However, the character can't actually make enchanted items - instead being limited to those provided by other PCs & NPCs. We decided that - based on the example of the warden swords - she could use enchanted items made specifically for her at the full lore rating of whoever did the crafting, rather than having to user her own (much lower) lore skill. Which, given that it cost her the pure mortal bonus, seemed eminently fair. (Had the character been a were-critter, or some other non-caster supernatural template, we might have ruled differently.)