[Inkscape-devel] how to save last tool selection?

Hello. Does anyone know how I can save and restore the last tool selection on startup? You might ask why bother, but for my use case, I want Inkscape to always start out with the eraser tool selected when I'm using the eraser end of my pen (event source GDK_SOURCE_ERASER), to save me from having to tap the erase tool with the eraser end of the pen.

Is there any reason why this isn't the default behavior? If saving the tool selection isn't implemented, can someone show how to programatically change the tool selection for the eraser to be the eraser?

Appreciate your help, Yale