Masking Brushes Need Instant Reverse/Inverse

The mask refinement tools are really slow and unintuitive.

Having to go to the dropdown menu to "add via brush" to paint on the mask and/or do the same to unpaint is wildly unintuitive, very slow and not efficient. Masking with brushes should have an instant reverse option like Photoshop - hit X and the black/white, paint/erase is flipped. Paint with a broad brush, flip and erase with a slightly smaller harder brush.

Currently it's like your drawing at your desk but your eraser is in the next room instead of your other hand. No one wants to make that trip every 2 seconds.