Fake Switch Kick into Switch-Stance Hook
For this unique combo, first switch your feet the same way you would to set up a switch kick, then hooking with what is normally our power (rear) hand which is now in the front of our stance (lead hand).
Training in both orthodox and southpaw stances is not a good idea as it divides training time in half, but integrating an attack or two like this one can catch an opponent off-guard, if they're expecting a switch to be setting up a switch kick or switch knee.