I love it in 9mm.. I prefer more capacity and ease of follow up shots to 45acp any day. I just don't believe 45acp is the end all of calibers. I own 2 45's and enjoy shooting the round, but will not use it as a self defense round. I bought it for my girlfriend to carry, so she has it all the time. I don't mind the gun, but I really have no use for grip safeties. If you understood how the XDs works internally compared to XD and XDm, you would realize the grip safety isn't even needed on the gun. They just put it there because XD is known to make their guns with them. The way the striker operates before firing in the XDs is EXACTLY like a Glock. The striker is at rest and has NO spring tension until you start pulling the trigger back. Once you reach the rear of the cycle of the trigger pull the striker will fall and fire the gun. On an XD or XDm, the striker is under tension, and the trigger pull drops the striker off a sear to fire.