A small point;
"Fitz" Specials weren't just about concealment. They were built as close up fighting guns. They were intended for pocket carry, as Fitz did, at a time when carrying large frame revolvers in leather lined coat or pants pockets wasn't so odd. The cut away trigger guards were so that a thick finger could get to the trigger quickly without anything getting in the way.
Fitz didn't invent the ideas of snubby's or of "belly guns" (after all what's a derringer but a belly gun?). He was a theorist and proponent of "Fighting Handguns". That is of guns designed and intended as close up fighting tools for personal defense and primarily that. He drew a sharp line between these and military or police sidearms or sporting handguns (as did Chic Gaylord who came along later).
Anyways a part of self defense is thinking through the ramifications, legal and societal, in advance of the event.
tipoc