Noob perspective
1. Locks installed upside down.
2. When looking for the key to my front door I look at the bitting and don't use any other form of distinction.
3. As I sleep I imagine pins moving past the shear line and how that feels..
The upside down locks really bothers me for some reason, I wonder if the installer did that on purpose or even knows what they did... Or knows but to lazy to undue a couple screws n flip it over.. I bet it would be harder to pick for me at least but prolly not good for the lock specially for something on the exterior...