Olfarhors, the poster that I was replying to was considering a revolver, and he had an LCR, but wanted one with an exposed hammer. That was in Post #19.
Many DA/SA guns, especially small one, use an abbreviated hammer, like the S&W 6906, that will remain flat with the slide, again to reduce snagging problems. Others, like the Colt Government Model .380, the Mustang, and the Sig P238 utilize the Commander style rounded hammer, and their small size, to accomplish the same thing, but only in Condition 2 or 3. The shape of the hammer, small as it is, still presents a snagging point when wearing a loose fitting garment, like a shirt, and drawing from under it. Worse, is the fact that the gun may print when moving around, as the hammer allows for an unnatural draping of the shirt when catching on that hammer nose area.
The older vest pocket, and pocket, guns were almost all striker fired, presenting a smooth snag-free surface. The Ortgies, Colt Model 1908 (and all of it's derivatives), OWA 25, Walther Model 9, Webley Model 1912, Jeffco Depose, Kommer Auto, Sauer Model 1913, Steyr Pieper, H&R Self-Loading Pistol, Norton TP25, and the Bauer Pocket Model (American made, post-68, versions of the Model 190 were all examples of guns used when modes of dress commonly included suits at all income levels (3-piece suits, at that). Larger, heavier, guns were available, but required much more planning, and more expensive tailoring.
Today, with the market flooded by striker-fired Kel-Tecs, Rugers, Kahrs, S&W, and a plethora of others, small pistols with a hammer are getting rarer. Calibers are available in these mini-guns that never existed in their previous hey-day as well. Where the .22, .25, .32, and .380 used to top the list, today we have 9x19 and .40 S&W chambered guns. Many are lighter than the older, all metal, guns, and have sights that are actually improvements over the "jam it up their nose and pull the trigger" equipment of old.
The .380 has been America's version of the European's .32 ACP. Typically, Europeans realized that the .32 ACP was capable of fine performance at the ranges involved in most of their self-defense scenarios. Until the American penchant for "bigger is better", especially the past two decades, surfaced once again, so was the .380 ACP.
Today, we seem to think that we're going into combat against drug-fortified, 250 pound weight-lifters with a death wish everywhere. People talk about terminal ballistics at 25 yards, or even beyond, when using pocket minis. I think that this is a peculiar defense mechanism, used to produce scenarios where ONLY a heavier caliber will suffice, no matter how unlikely they are to happen.