I didn't want to get down the rabbit hole of the exceptions, like MP's/CID/various QRF's/etc who do regularly carry with a round chambered. Many of those same orgs aren't 100% into M18's yet. I've seen a few CID guys still carrying M11's and I met one female CID Agent that was carrying a G43X (I'd have loved to see that Exception to Policy memo).
The significance IMHO is that's a relatively small number of users and weapons compared to the total number of M17/M18 handguns ordered and on unit inventories now. If there's a problem that affects, say, only one in every 5,000 guns, it might be rare or even unheard of with current regular 'loaded' users. But if we had a large en-masse mobilization that suddenly saw a lot of loaded M17's and M18's carried in holsters by tens of thousands of normies like me, those problems would likely become statistically relevant.
There's also the institutional standards that still have M9 anachronisms in them, I recall @
jetfire sharing the USAF standards that, at the time, only utilized the manual safety during the proscribed clearing barrel process. Makes sense for an M9, makes no sense for an M18.
But that's another whole topic of conversation, I was asked to provide the 'PMI' familiarization training to an Army Medical Support Unit that just got new M17's, and I had to fight several of those battles explaining the significant differences in the M17.
That all said, if all the problems are with pre-2019 P320's that didn't get the 'upgrade' - does anyone know the vintage of these Indian River County Sheriffs' Deputy guns?