if you turn off store window, it will no longer be automatically added to your listings.
if you have it in existing listings when you turn off the store window, it will continue to be displayed in those listings. Also, it will continue to pick up any new listings and automatically add those to the group of pictures in the window.
turning "off" store window only stops it from being auto-inserted. If you manually insert it in listings it will still work. (just like it continues to work in listings that it's already displayed in when you turn it off)
still working on caffeine, so i hope that made sense