I've read/heard somewhere that most people have larger left feet than right feet and that good shoes are created to adjust for this (i.e., the left shoe a little larger). Is this completely unfounded? Also, if true, does this size differential have anything to do with right/left-handedness? This is regarding the fact that my right shoe (on a C&J Handgrade) feels noticeably, though not uncomfortably, tighter than my left, and I'm left handed. Just a coincidence?