You are generally running a 160-180 gn bullet with 35,000 psi of pressure behind it out of gun with a frame and weight designed around a 115-124 gn bullet with 35,000 psi behind it. It will be different.
Now, even though it is based on a 9mm frame my XD tactical 5" makes the .40 a *****cat. It is easier to shoot than my G-22C .
I can't wait to hear the cries of disappointment from those so eagerly awaiting the XDS in .40. Their is going to be a lot of headshaking as they try to figure out why a 180 gn bullet is so uncomfortable to shoot (at 35,000 psi) verses the ease of shooting the .45 230 (at 24,000 psi).
"Oh bother" said Pooh, as he punched the magazine release...
In some peoples minds "What if?" is just as real as What Is.