It's a good pistol, but not universally sized (or sizeable) and at this point, a little antiquated; I can get more rounds in a lighter package that's easier to shoot well and better fits the variety of hand sizes in the military. I'll say up front that I never shot anyone with one, but did observe multiple folks cease their actions due to being hit by 9mm.
Since it was my last line of defense, I bought a 92FS and got good with it, even if it was never my favorite pistol. I didn't like the 2 trigger pulls, hated the DA especially. My thumb couldn't reliably reach the safety, so I would carry safety off, half cocked. The purpose of half-cocking after decocking was to get the trigger into that much more reachable a position, and it stiffened up the safety mechanism so that it was less likely to be activated unintentionally.
Of the 3 I was issued downrange, only 1 was unreliable, and that was due to magazines. Ironically enough, I blame the AWB of 1994-2004. In 2003 Iraq, I had 2 government marked magazines that would compress but not release, keeping pressure off the rounds. Of course, if I'd have had the opportunity prior to the deployment I'd have wandered down to the local sporting goods store and bought my own. I was also a grenadier that tour, but kept the pistol on my lap while driving non-uparmored HMMWVs.
Second tour I again had both a carbine and pistol. I had the opportunity to do a lot of training with our resident FTF and the mobile trainers that came around. The pistol never failed. I added CT grips which were a nice touch for low-light/NOD shooting, and brought my own Mec-Gar magazines.
Third tour I was a DA Civilian. I had an M-4 until the new SOFA with Karzai said that no civilians could carry rifles. Had to turn that in, and roll with just the M-9 from then on. The one time I pulled the pistol I remember being cognizant of just how weak a weapon it was in the face of rifle and rifle grenade fire. I couldn't have an M-4 because it was not considered a defensive weapon, but an M-9 isn't much good for defense when you're being shot at 100-200 meters out. The CT grips and magazines came back for this tour too.
I found that as well, I actually had enough downtime to practice malfunction clearing, I started using the divot cuts at the front of the slide to tug and stayed away from the safety completely.
I had the same issue. I found that when I would go to power stroke the pistol (as in tap/rack), I could index the first two fingers of my weak hand under the safety lever to keep it from being accidentally activated.