So what would you do? I have a XD.40 and an XD Tac. .45 now I am looking at buying a XDsc. I want the 9mm because I don't have one yet but I do own 7 extra clips for the .40 that will interchange. Plus I have heard it said if you own a .40 keep with them and don't interchange because the ammo is too close in size. Personally not an issue for me though. Any thoughts?