Based on some tests I read about somewhere, we have an additional mix based on the season.
Test's showed the .380 could be performance limited or actually stopped by heavy clothing.
Accordingly, I load my wife's Sig P238 with solids in the winter, for penetration through heavy coats.
We save the high-performance Gold Dots for Spring/Summer/Fall.
Is it necessary? *shrug* - but I'm not willing to find out by having a bad guy keep coming on her after getting shot a couple of times. And she's not outstanding on the range, but good enough. Head shots would be better with this caliber, but I train her for center of mass and double taps.
*Tests*