Well chopperlump, it's like everything else about gun design, you pays your money and you takes your choice. I have a load of pet peeves, one of which is hammers with integral pins. Not so bad if the pin is mounted in the hammer ala Colt/S&W revolver. I also hate non replaceable hinge pins. But really, there are gazillions of Birmingham boxlocks knocking around after many years of hard use that still work well and have neither of these features. Sooooo?
nial