1. This script isnt new, so let us call that Autohandswitch and not "Bono's Mod: Autohandswitch".
As the console writes "AH, AH, AH", I guess the maker of this mod just wanted to fool you guys. If you search through the forumz a little, you'll probably find a working script
no
You should try it. It is really convenient because hand 2 makes the projectiles go to the crosshair like they should, unfortunately, you can't see your gun in hand 2, fortunately, when you stop shooting, you switch to hand 3 so your marker is visible so you know what gun you're holding without having to shoot your marker.