I'm still a novice and having trouble drawing what I want in 1 stroke and I use the eraser a lot.
I'm using a Wacom Intuous 5 and each time I start Inkscape, I have to tap the eraser end of my stylus on the eraser tool for it to register. Is there a way for Inkscape to remember my last selected tool after exiting or maybe even permanently bind the erase tool?