While cameras pointing towards a dwelling sound good. the exposure to the elements (even though rated outdoor) can cause issues. Like snow or ice build up on the lens, wind or hail storm ripping them off their mount.
On the dwelling means you're seeing them before they are close enough to damage the camera. Exposed anyone can see as well as access them from a distance...
I would like 2 more added to the ones we have now. However climbing anything is not happening, including crawling around the attic.