It's been a few days since the end of my roommate's Uncrossing, and I've seen enough to judge that the operation was definitely successful, beyond what my divinations said. Without going into too much detail, he's been in a really bad state for more than a month. This past week he has been making progress in leaps and bounds. Apparently he was anyway, but it became openly apparent since the Uncrossing.
He reported that he has continued to dress himself with the Uncrossing/FWoP/VanVan-combination oil everyday. Between my own results with it and his, I'm starting to see the kind of influence that combination of oils has, and I'm impressed! In fact, if I am required to do another uncrossing on anyone in the future, I might use this combo instead of straight Uncrossing oil!