Picked up an XDs yesterday, and put 100 rounds thru it this afternoon. Functions and fires perfectly, shoots nice tight groups, and the red fiber front site is awesome. I prefer to use the 7 round mag as I've got large mitts but the 5 rounds work with my pinky wrapped around my support hand.
One thing the XDs is not, is easy on the hands, at least compared to my 4" XD45. The grip is very aggressive, like an old “pineapple” grenade and leaves pretty good impressions on your hands. It also will give you a good case of “Glock thumb” which kind of looks and feels like rug burn by the end of the day.
In the end, a very nice piece and I’m happy with it overall. Even with its limited capacity of 7+1 it’ll most likely become my primary carry, but with an extra 5 round mag in my pocket.