If you pick the right size of wire and tubing, it should hold by friction. You might put a slight bend in the tube to make it tighter, but don't kink the tube.
The ones I've seen run it to either a ground throw or a switch machine or an apparatus like a G scale switch tower. (I hang around with the British modellers)
I work on one layout where we have the Caboose industries ground throws and despite their being oversize, we pull them apart regularly.
Platelayer is the English term for a track worker. It goes waaaay back to when the rails were short castings that only went from one tie (or sleeper as they called it) to the next. These castings were called Plates.
Our British modelling club in the Toronto area is called The Platelayers.
Thank you for increasing my pitiful store of knowledge Learn something new every day here at the Gauge, which is why this is such a wonderful site).It must have took for ever to lay a mile(or kilometer) of track that way!