I have a Wacom (Intuos 3) and love using it with LR3 on my Mac. I find, however, when I turn the stylus around so that the "eraser" end is used, it does not change the brush to an erase brush. This would be good so I could still use my other hand for adjusting the brush size with my Magic Mouse, rather than having to down the "option" key to change to erase. I have not been able to find a way to make this happen. The Wacom preferences pane is set to have the erase end erase :-) Yes, I could just click on the erase button, but that too seems an extra step that should not be necessary when we have this built-in eraser end on the stylus. . .
Does anyone know how to do this?