Banned forever.....or not
If the nylon Sidi's fit you fine, the carbon will also be fine. It's not the carbon sole that bothers some people, it's the general fit. Some people love Carnac's, some people can't wear them. I can't wear Addias shoes, but I love Shimano R210, 211, and 214's. The carbon Sidi's cost some serious coin, but they'll never go limp.