I've been wearing the full grain calf sidezips pretty frequently over the past 2 weeks, I'll post up some pics of creasing when I have some time.
Few things off the top of my head:
-Agree with cyc that it's not a cheaper alternative to MMM. I'll probably end up getting another pair of MMM or Buttero sidezips.
-if you have wide feet sizing down may not be the best idea. I'm a true 43.5 and went with a 43. It feels fine when I first put them on but as you go about your day...