No, that doesn’t work. The Trixbrix R40 double slip switch is, geometrically, pretty bad and incompatible to most of the situations in which you would like to use double slip switches, especially in parallel track situations. I told them and proposed an improved geometry already, but they didn’t build it yet. In the meanwhile and if you have the space, you should try R104 switches and double slip switches. They are perfect for what you are trying.