Had a sitch where the enchanter in the group declared a potion that gives him the ability to use The Sight - a power he did not have. Since it's just a special form of perception & assessment, about gaining knowledge not otherwise attainable, ect ect, I thought this seemed reasonable for a potion. He had a maximum potion strength of 6 with 2 doses, I told him it had to have a minimum strength of 5 if he wanted to use his Lore (which was at 5) at its maximum to assess... he didn't automatically get an understanding of what he was seeing, the potion just allowed him to use magesight - once he had opened his potion-induced third eye, it was normal Sight rules after that.
Does this seem kosher?