Transparency Grid needs toggle on/off button

The transparency grid is a very useful feature but not always needed for video editing.

After Effects conveniently offers a switch button in the viewer.

It would be nice if Premiere Pro also offers the option to add it as a button below the program/source monitor so we can get to it faster than the menu option. Even the keyboard shortcut is slower because it requires a mouse click first to activate the Program Monitor. That mouse click could already be on that button...