I still have my SIG Pro (but SP2009, decided to stay cheap with ammo) from back in 2001 and I still enjoy it, overall...though I'm getting a newer handgun soon to keep me from wearing this guy out of the range as fast.
I've used the P220, P226 and P225 over the course of several years as well and it felth both better and worse than the "Classic" SIG pistols. The two grips that came with it, I think the medium-sized rubber grip was a serious mistake and they probably owed some crap grip company a favor, j/k! The smaller, stippled plastic grip was much better, just...a little small.
I ended up buying this pistol because at the time it was the best pistol that I could handle while firing, even if it did have a higher bore axis. It came back down and was on target just after the slide came forward and chambered another round. Some people didn't like the controls, but their slimmer profile was helpful when carrying IWB and it doesn't take much effort getting accustomed to them vs. the Classic SIGs and incorporating it to your muscle memory.
I agree, bad timing was one thing that kind of hindered the SIG. SIG said that time wasn't their deadline, but Glock, HK and several other polymer pistols had long walked through the polymer door and while I believe the SIG is a fantastic performer and has stood up to a lot of abuse I've put it through, it was still way back in line. Then a lot of the companies that made holsters, grips, lights, etc...only a couple of them made anything for the SIG Pro series. This was probably my biggest disappointment. I had to make do with a few lackluster holsters, the larger grips I thought would surely show up never did...that SIG light/laser module was pathetic. I'm glad that they FINALLY have the SP2022, but it's still in the back of the line and other than the light rail and a few minor touch ups, there is nothing really new with it to make people want to turn their heads. No DAK option, no compatibility with Classic magazines, etc.
But like I said, it never let me down. It carried well and I was comfortable with it wherever I went. My drawing was great, and the gun performs flawlessly. But it's been several thousand rounds so I think I should maybe at least put some new parts in it. But now, I'm going to get another handgun...this so the SIG that has been with me and proven itself for over four years can inherit the honorable role of staying in the house 24/7, to keep the home and my family safe and be there whenever any of them need it.
Because I think SIG just didn't really try too hard with the Pro in some ways, and add that with the fact that there are still few manufacturers embracing it, the SP2022 is not in consideration and I've already looked at the P226 pistol that I have also been very familiar with. Probably will get the P226R DAK.
So yes, the SIG Pro is a very underappreciated handgun. But I still use it, but my experiences above is part of why I think that you don't hear too much about this handgun.