I feel stupid for asking, but...
I have a DL BIAS WWM with knotty mods.
I haven't used it in a while and can't remember if it is head left/feet right or vice versa.
I can hang it either way by simply flipping it over and disconnecting one of the whoopies to run the fixed RL over and then reconnecting.
There has to be some difference or they wouldn't specify when ordering, correct?
Here it is currently with head left/feet right.