His perk states that it gives a 30% chance to improve potions dropped from monsters. I was under the impression that it is supposed to be active at all times as long as he's with you, but it isn't. I levelled him all the way to 20 and killed many monsters along the way, and the only potent potions I saw the whole time were the low level potent potions in the box he gave me as the reward for his first quest.
However, once I got him maxed, and received his Julianos medallion keepsake, I suddenly started getting potent potions.
I thought that the perk supposed to be active when he's with you and the point of the medallion was to make his perk active permanently - i.e. even when he isn't with you.
Am I wrong? Is this working as intended?
PC NA, CP2000+Character creation is the true endgame.