Why can't you assign easy switch to one of the MX Master 3S BUTTONS?? It's such a fancy complicated expensive mouse..and yet I cant switch between devices without turning it upside down and toggling it? THat's not how the world should work. The button should be on the top. You even already have mice that switch on the top....why not your flagship mouse?!?!? EASY SWITCH SHOULD BE A BUTTON ASSIGNMENT OPTION! YOU CAN DO IT! SO DO IT!