The question came up last night about the exact mechanics of Paths of Enlightenment and Mortals and and I didn't have time to look things up, but I promised I would do so and post.
Vampire: the Masquerade Revise, page 286 under Paths are utterly inhuman.
"...a Path follower is treated as though he has a Humanity score of 3 when using the rules for interacting with mortal. If the Path follower's Path Rating is less than 3, use that score instead."