Personally, I don't look at the XDM as a carry weapon. The size wouldn't be an improvement over your M&P either, in my opinion. If the regular XD feels good in your hands, than I don't see the benefit of the XDM over the XDSC for a carry weapon. The "Match Grade" barrel isn't necessary and neither is the improved trigger for a carry weapon, IMO. Since you already have an M&P, why aren't you considering the M&Pc?