First, I think the 9mm and the Beretta 92FS have no place as a sidearm in the military.
This caliber is probably about 4th or so on the list of effective common calibers after the 10mm, .40, and .45 and .357 Sig. Women and small men can't shoot it? Too bad. Train them to be stronger and better soldiers. In the Service that I want protecting us, there is no place for a "lowest common denomiator" bullet.
As far as the platform, sure the 92FS is okay, but there are several BETTER platforms such as Glock, Sig, HK, CZ, 1911s, and the list goes on and on. I understand that one requirement is a decocker on the sidearm. We don't have a decocker on our M4 rifles do we? Not necessary for a sidearm.
So, we can do better with the caliber and the platform.
NOW, let's talk about practicality. I don't think that the sidearm in the normal military is a HUGE priority and I don't care to spend a lot of money on the transition. I would be fine with a slow transition into a new caliber and round. I'd rather have that money earmarked for projects that have more practical effect on combat. How many battles are won and lost on the caliber of our handguns?
Not a lot of testing is really even necessary for the common calibers and handguns available because there is plenty of data on these. My thinking is to just research available data on caliber and platforms, run some tests and switch 'em out. It's not rocket science.