I do think they’re ugly as sin, but beauty is in the eye....
I do NOT think “gimmicky” is an appropriate word for them as I don’t see how they wouldn’t be quite effective for personal defense. “Novelty” might be a better word. .45 long is .45 long. That stops stuff great and small. As for the .410 loads, it’s my understanding that due to the popularity of The Gov and the Taurus version, and probably the derringer type pistols chambered for it too, that many ammo manufacturers have come up with a variety of new loads/designs in the .410 shotshell that really are quite devastating for personal defense. Enjoy.