I own both the Shield in .40 cal and the XD40sc (as you can see from my UserID). They're both great guns. I prefer the Shield for everyday carry but I occasionally carry the XD, too.
Incidentally, I carry the Shield in a Crossbreed Minituck and the XD in a CB Super Tuck. Both are great holsters for concealed carry.
[SIZE="2"]"A man without a horse ain't but half a man. A man without a gun ain't no man a'tall."
~ Texas saying, circa 1870