In the Leung Sheung line, we use horizontal double palm strikes (as in our top and bottom palm are facing out horizontally). Outside of my little bubble, everyone does vertical double palm strikes. This seems odd to me -- it would seem to me that you would frequently have to overextend yourself/your shoulder for the top palm and put your wrist in a dangerous position for the bottom palm.
Is there advantage to doing the vertical double palms?
Is there advantage to doing the vertical double palms?