What are the pros and cons of different carry position's?

So I've been wondering what the pros and cons of carrying either AIWB or just IWB at the 4 o'clock or 5 o'clock position. For reference I am about 5' 11" looking to carry a Glock 19 sized handgun. Which of the positions offer more concealability? via /r/CCW https://ift.tt/2N6mWgr