-
Sounds like it doesn't it.
Check it: https://www.innerbody.com/anatomy/nervous/common-peroneal-nerve
"The common peroneal nerve is one of two major branches of the sciatic nerves within the buttocks and into the thighs, along with the tibial nerves. The many branches of these nerves supply nerve impulses to and from the muscles and skin in the hip joints and thighs, the lower legs, feet and most of the skin below the knee."
Yeah there's no reason why I would wear shoes at varying levels of tightness between bikes. One thing I forgot to mention is that the numbness seems to subside when I'm out of the saddle. By process of elimination it sounds like this could be a saddle issue...maybe...