Chris: nice trip. I should set up a bit of catenary for interchange, but I still have to add the 3rd (and 4th) rails to my suburban station.
Railron: The latest issue of Railfan has an article on the seashore Trolley Museum that shows their double slip switch -- all in girder rail with single point switches. I can't remember how the overhead goes -- either two frogs back to back or 4 frogs and a crossing.