Paintstormstudio.com

Hi, i recently bought the program and i'm in the process to switching from Krita. It is really cool and has a really good brush engine, although, there is just one minor feature that's very useful for the sketch and linework part of a piece. The "eraser switch size" maintain the size changes of the brush with the eraser mode on or off .That way the linework is constant and a "big" eraser could be turn on and off with just one key. It would be amazing if you could implement that. Thanks

In this case, don't toggle sketch brush to eraser - use "e" key to switch to eraser from erasers category, also you can bind any different erasers to different hotkeys.

http://www.paintstormstudio.com/help/erasers/
http://www.paintstormstudio.com/help/hot-keys/