
This very useful debate just shows how much we all differ in our drawing ways but I still maintain my agreement with Peter's position that TVP needs a standard erase tool with a standard eraser icon. Otherwise, why even have an airbrush or oil brush or mechanical pencil, when they all are basically just the airbrush to begin with. Then when someone starts using TVP and asks for a pencil and eraser we give the standard answer: Use the airbrush, which will open another debate of how we each turn the airbrush into our favorite drawing and eraser tools.
My son is the chief designer of a large New Zealand software company, and he just recently told me that his endless motto for good design is, Make Everything Obvious which makes the issue of this thread quite obvious.