I was looking for a way to set a shortcut to the Eraser Mode on Custom Brush in the shortcuts panel settings, but I didn't find it there.
It would be very good to be able to set a shortcut for it, this would speed up workflow a lot. I use this option a lot now that I am making a comic in ArtRage.
It could work like Krita, where you just press "E" and you activate the eraser mode.

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For me, Eraser mode is better than using the Eraser tool itself because you maitain the custom brush shape and texture.

I am using latest version of ArtRage Vittae on Windows 10.