Depending on what type and degree anal you are may depend how you behave with this subject. I have 7 wall hanger;three of them are in my office. If a guitar is in its case in my home, it probably is for sale. I just had a neck reset on my Martin, that I keep in a case. But my Petrified Gibson LG-1 1965. It is out and weather seems to have no affect on the guitar.