+1 To doing one's research on any firearm. Especially the "new" models. Many found that out with the "pistol that shall not be named", and a couple others.
I did a lot of research on my first 9mm purchase, FNP 9, and found a rental range with one and test drove it. Same with my going to the dark side G21 purchase. After seeing so many methods of torture and abuse, and it kept going bang, when the opportunity presented itself, I took a big swig and bought it.
IMHO, a professional retailer, should take the time to give you ALL of the skinny on a pistol, but we all know that varies, and customer service, even big box stores, don't always have the info or skills to provide such info.
I also thought that changing the recoil spring to a Wolff, might change the "flexibility" of ammo, but a 9 is a 9, until you get to +P or +P+ hot loads.