Our guide told colorful stories well, and it added to the enjoyment of the evening that she seemed more scared of the hauntings than us. Bonus points that this was the only tour I could find on a Monday night while all the other tours in town are weekends-only.
Without a great guide, though, this probably would have been a bust, especially the longer version. It's a short walk through S. Pittsburgh in all outdoor, well lit, populated settings.
I'm bumping this up to 3 stars based on the unscripted pop-in of a resident near one of the haunted buildings. They had frightening stories about seeing apparitions in their apartment - it really boosted the ambiance of the night :)