It is regularly my first action after opening Workbench window. I click on Working Directory in listview with changesets. The main reason is probably that I always need to see what's changed against tip changeset (the state when nothing is changed is also important for me).
Currently Workbench is opened with focus on tip changeset, so I see what changes it contains, but to say true, I cannot remember when I needed this information last time.
Maybe just consider adding some option for focusing Working Directory instead of tip when opening Workbench. I would appreciate it a lot. Thanks!