I was going to ask what they were thinking with this one. I thought it was a lot harder to shoot a DA revolver accurately than an autoloader. Looks like this ought to be the other way around?
Yep, I agree, as far as easier to shoot the autoloader accurately. I can only assume the law is that way because the revolver is so simple and reliable while you need to know how to clear jams with the autoloader, disassembly, cleaning and servicing is a little more complicated, and there are many more accidents with the autoloader.
When I started on the police department, we were issued .38 spl. revolvers, either Smith & Wesson or Colt. But officers could carry anything they wanted on duty as long as it was .38 or larger, S&W or Colt. While officers were encouraged to learn to shoot pretty well, there was no requirement that they be able to qualify. They had to go shoot twice a year, but there was no pass/fail grade. The officers who carried automatics for the most part carried the old Colt .45s. And for the most part, the automatics went off accidentally in the locker rooms, in roll call rooms, and in the cars, and then when needed they wouldn't work. We had a lot of damage and a lot of injuries, but for many years, the chiefs were afraid to change that rule because they could imagine some officer getting killed and his widow saying, "If you'd let him carry the gun he wanted to carry it wouldn't have happened." But eventually we got a chief who prohibited automatics, which sure cut down on the accidents, and then the so called "vicarious liability" theory also required that officers actually shoot a passing score twice a year with
the particular gun they were going to carry, by both make and serial number. That eliminated the .44 magnums since the recoil was too much for the old "practical pistol course" that required some rapid fire, rapid reloading, and continue firing.
But in later years, a number of the younger officers wanted to carry automatics that would hold 14 rounds instead of the 6 rounds in their revolvers. I've never been a fan of the "spray and pray" method of shooting myself. But the command staff decided we needed another study to determine whether we should be using automatics. Now I was commander of the Planning and Research Division which normally handled all such studies. I told them that I had a good crew of honest folks, and I'd let them do it with no comments from me,
but that everyone knew that if it were up to me, I'd never allow an officer to carry an automatic, so they might want to assign that project to someone outside my division. So they assigned it to a guy who was known by all to love automatics.

And you can guess the outcome. All the first batch of automatics received had to be sent back for defects.
Now I know the guns have been improved over the years and they're more reliable now than in the past. And in the past, the officers were not trained in the use of automatics. They could carry them, but the training went to the use of the revolvers that were issued. I think modern automatics are OK in the hands of a properly trained person who knows and understands his gun and how to take care of it, and is willing to spend the time to take care of it properly.
I knew the department started issuing automatics many years ago and even heard a rumor once that they had to qualify with an automatic, but learned that's not entirely true. The vast majority of the officers are carrying automatics now, and that is what is issued, but when I was at the Range Tuesday, a lot of officers showed up for shotgun qualification shooting and I noticed two sergeants who were carrying revolvers instead of automatics.
I'd like to have a 9 mm automatic for several reasons. 9 mm ammo is cheaper than .38 ammo, the current pistol course is designed for automatics, so I could shoot a better score with the automatic, and they're fun to shoot. But I don't need one, so I really can't justify the cost and may not buy one since they're so high priced.