*PSA*
The small of the back isn't a great spot to keep a concealed weapon. If yo7 go to draw it, someone could easily stop you from the front. Further, you can't see it, so you can't quickly check on it without making it a little too obvious something is there. Which leads me to the last point, and that is that an object at the small of your back is very easy to take. If someone wants a weapon from you, modesty won't stop them