It has a very unique sound. Also as there are no pole pieces, there is absolutely no fuss of whether the string line up with the pole pieces or not :).
It has a low output, and an impressive "bell" like sound.
I bought this pickup as a middle position between my two P-Rail pickups. With the aim of having it complimenting the rail and the P90 modes on the P-Rails in the notch positions. It works like a charm.