My .02 cents:

I worked in a PD that used S&W 9mms from the '70s until 1991, when they switched to Glock 19s.

There were a few mishaps. Out of 1200 users w/ no problems, a few dopes forgot to decock and holstered cocked pistols. Some one in adm decided the Glock was the cure - there were no more decocking incidents.

As far as reliablity, I never heard of FTFs that weren't traced to operator error. Both the S&W's (469s, 669s) and the Glocks performed well, again despite the fact these were carried by people that were not true "gun" people.

One other thing, regarding the reliablity of revolvers, a guy next to me at a range training course one day drew his model 64, fired three shots and the nose of the firing pin flew off. At least he had a convenient short club to use.