I own a pair of 46's and typically wear a size 11 gym shoe. IIRC, that's a half size larger in order. Note also that I have very wide feet but don't have any issues with Sidi's so I've never really understood the claim about them being for narrow feet (heard that more times than just around here).
Identity theft is not Fun.
Identity theft occurs when an unscrupulous person gathers enough information about you to successfully impersonate you online, by mail, over the telephone, or in person. Source: Internet Safety Awareness