Here in FAA land the description of the PiNs approach is such that I don't believe the FAA will allow airplanes to shoot them. Part of the issue is the maximum speed. Presently in New York City they are setting up these approaches for the Wall Street and East 34th Street helipads. I have discussed this with our POI as I would like to use them for the seaplane dock on the East River, but as he pointed out, since I would not be flying a helicopter, I could use them.
The IGS approach into the old Hong Kong Airport was basically a PiNs approach, as you flew the ILS to a point in space and them maneuvered visually to land.