Yep, I noticed while I was typing you were obviously answering as well. 
I will say that detecting the cable slack was the silver bullet for me, that eliminated the tricky adjustment of the lame toggle switch limit. It also insures the bridge is fully into the stops and aligned with the fixed section when the motor stops.
I actually had a design for a low voltage control that had all the 120V in the box, but it was more complicated than just using the two switches. In the end, expedience won out and I went the simple route. The PTC was my nod to making sure that I couldn't get a direct short with inadvertent multiple operation of the switches.
