Inspired by the 2 way switch, thought about making a N-way switch.
Circuit is a 5 way switch but can be very easily extended to N-way.
Of course the gate delay must get lower as N increases.
Keep at least >1.5 clock cycles between each toggle of the switches, otherwise multiple toggles will be counted as 1 toggle only.
Alternatively, one could just add the switch outputs; when even# turn OFF and when odd# turn ON. Hook the PMOS to the lowest bit.