I carry both revolvers and semi autos, and when small size matters that includes J frames and .380s.
But...care needs to be taken to ensure a hollow point will perform well in both .38 Special and .380 ACP, particularly in short barrels.
.380 ACP takes a big hit in velocity as barrel lengths get shorter, far more of a hit than 9mm Luger. Similarly, a 2" .38 won't produce the same velocity as a 4".
In general most hollow points designed for .380 ACP that will both expand and penetrate 12+ inches (90 gr XTPs, 90 gr Gold Dots, 90 gr V-Crowns) need a muzzle velocity of at least 1000-1050 fps for reliable performance and adequate pentration.
Consequently, if I carry a .380 ACP it iss far more likely to be a 3.8" Beretta or a 4" Baby Rock, than a 2.75" Kimber Micro or 2.7" Sig 238. At 3.2" the Glock 42 falls on the short side of the aisle.
The longer barrels will give a solid 1025-1050 fps with reliable expansion and 12-13" penetration. The short barrels top out around 950-975 fps and that is just not quite enough.
Similarly, .38 Special loads that do well in a 4" revolver often don't impress in a 2" revolver. You can get by with a bit less veliocity in the .38 Special hollow points but in my personal experience you better have 900-925 fps, regardless of brand. In a 2" barrel that means .38+P, and then at least check to confirm your velocity with a chronograph if you cant do gel testing.
A 3" barrel really helps, and it's the sweet spot in my opinion for a concealed carry revolver. (For .357 Mag you really need a 3" barrel for enough ballistic efficiency to exceed .38+P velocities by enough to matter.)