I bought two pairs of Carminas in Paris; one in November, 2004 and the other in November, 2005. I was very happy with them until just recently; especially their appearance and the way they held their shine.
However, I then took the newer pair to Italy on a 10 day trip. One thing I had previously noticed about them, that they seemed a little bit stiff and did not flex too well while walking, really came home to roost. I tried wearing them 12-16 hours per day on my trip, while walking around 10-12 miles per day. The "little" stiffness I noted became far more pronounced and they made me miserable. I rubbed one heel and one little toe raw, simply because the soles of the shoes did not bend well.
By the way, I have the same problem with a pair of Westons; they seem fine for sedentary wearing or even light walking, but they begin to kill me after long walks.