And there's a way you can ALWAYS tell. The yellowish whiskers at the top of the front thigh are always much more uniform on the fakes. Also the stripeyness on the legs is much more pronounced. Here's a real pair I picked up:http://cgi.ebay.com/ws/eBayISAPI.dll...e=STRK:MEWN:IT
I know for a fact that this one is real because they are identical to the ones I got from bloomingdales.
Also, the fake x-rotucks are much shorter. I had a pair of each, both with 32 inch inseam, and the fakes were a good 1.5-2 inches shorter in length.