These just came, so I have limited experience with them.  My first impression is that they run narrow through the foot (length is fine), and yet my heel still slips.  Hopefully a little heel pad will take care of that.  Otherwise, they are pretty comfortable to walk in and I am surprised to find that they do seem to help posture!  Obviously it's hard to be sure, but the feeling I have is of standing straight and tall.  I look forward to walking more in them.  I wish they would come out with some more color choices in NON-leather.