Consistency is a basic usability-demand. But e.g. in apps a push from the side bezels goes to the home-screen and in the launcher the same gesture opens the notifications.

And that is not only inconsistent, but it also makes it harder to go from the launcher to the home, if the launcher has many pages. E.g. if your launcher has 5 pages and you are on page 3. To go back to the home-screen, you have to multiple swipe up to the home-screen or multiple swipe down to the last launcher-page to use the pulley-menu there. With the known gesture you could go very fast to the home-screen from every launcher-screen.