Different strokes for different folks. I have Minox belt cases for C and LX but never felt comfortable using them. Feel the same way about belt cases for fountain pens. I prefer to carry my Minox cameras in my pockets (in cases just to keep out dust).
Currently reading a book by German soldier with photos taken using Riga Minox in Russian prison camps during years after WWII. Much of the time the author kept camera hidden in breast pocket.
In third grade us boys wore clodhoppers to school with a little pocket for a knife. Later, always carry knife in pocket. This, of course, depends on the size of the Swiss Army knife. Mine only has the essentials: blade, corkscrew and bottle opener.