I would always go into the bedroom and seeing the slide switch, I would want to use it to turn the light on. So I just added a switch. I did not want to surface mount up the wall and across the ceiling so I figured out how to run the wires inside the wall and roof.
The slide switch had some big wires one of which went up and over bye the bathroom vent fan. So I was able to tape a wire to it, pull the wire up to the vent were I added another wire, lubed them up with a little liquid soap and pulled both back down the wall. I then was able to get the pair of wires pulled over to the bedroom light.
I also added an outlet over bye the chest so the DW could put the alarm clock and what ever on the chest. Here I did use the surface mount because it was behind the chest as you come into the bedroom and not as noticeable.