Timely question. I've been working on a prototype moving switch stand for my HOn3, using the same slide switches I use for N.
Instead of just crimping the music wire from the throwbar onto the slide switch, I looped it around and sent a bit off sideways, bending the end back around so there's a little U channel.
The signal post is another bit of music music wire bent like a hair pin with a little handle at the bottom, which fits into that U channel (you can kind of see it on the normal position below). The other end of the post currently sticks down an inch into the foam, carefully centered on the slide switch travel. When the switch is thrown, the u channel just takes that little post handle along with it, turning the signal post 90 degrees.
Very rough prototype, but successful proof of concept! Next step is to extend the little 3D printed slide switch button to include a mount for the switch stand.
https://i.imgur.com/0DM1STm.gif