When I bought my PF 9, I decided it was too big for everyday pocket carry, so I thought why not an ankle holster? Got an Uncle Mikes size 1, and it works great. The PF9 or P3AT fit well, and the rig stays put and doesn't feel weird after just a few minutes of wear. As I was trying it, I wondered about the XD-SC. It's a bit too wide. Funny thing, it fits an Uncle Mikes No1 pocket holster just fine. For comparison, here's the PF9 and the XD-SC.