I can only relate that the new XD(s) single-stack .45 is unbelievable comfortable to shoot. I was very surprised. I thought it was much better than my friend's Glock 36 that I almost bought.
While the grip angle is just different on the bigger models, I think it made a difference in shootability between the skinny .45's.
This gun has replaced several as my go-to auxiliary carry piece, after my EDC 1911.
Yes, I love my Glocks, too; don't think I just be hatin'...
Blue & Gold Firearms Training
"It doesn't matter how many people I've killed. What matters is how I get along with the people who are still alive." - Jimmy the Tulip