.380 pistols
I have a Sig 230, a Walther PPK, and a Glock 42 in .380 ACP.
I also have a Walther PPK/S in .22 that I use as a practice gun for the P230 and PPK, in normal circumstances when I can easily find .22 ammo for a reasonable price . . .
Years ago I carried a Beretta 92F as a duty gun. I had a Smith & Wesson 39-2 that I frequently carried off duty because the manual of arms was the same as the Beretta. That was one of the reasons I got the PPK -- all the controls on those guns worked the same.
(Of course, the other reason I got a PPK was because James Bond had one. But I got mine in a bigger caliber)
Another gun I considered for off duty use was the Browning BDA .380 (which was actually made by Beretta). I knew somebody who had one and fired it a few times and really liked it.
Of course, you can get a Kahr or other small 9mm the same platform size as the BDA .380 that might be a better choice.
But if I ever find a BDA .380 at a decent price, I may buy one anyway. I have no earthly need for it, but that has never stopped me before . . .