So you prefer to use the eraser mode more frequently than the separate eraser brush preset feature but also like using both? Maybe you could have all of your frequently used brushes within one tag or use a plugin like Brush Tag Selector Plugin so switching your brush for eraser mode or separate eraser would take a negligible amount of time.
It is unfortunate that the plugin interferes with the default eraser mode shortcut, maybe the plugin could be modified so it doesn’t break default eraser mode shortcut or add a new shortcut altogether.