There are many revolvers that come without hammer spurs. Why do you think that they never post about having those problems. It would seem that if there were going to be the problems as you suggest, that they would become evident when practicing with the gun.(actually firing). Of the four spurless revolvers I have, and fire almost every day (retired, home range), none has manifest any of the problems you list. It (one of the problems) could happen, but then an evil dwarf could jump up and bite me on the butt also.