This, absolutely. What I mentioned as "work" above is personal work. Keeping work sessions, history and bookmarks separate is better (and probably safer?) than

This, absolutely. What I mentioned as "work" above is personal work. Keeping work sessions, history and bookmarks separate is better (and probably safer?) than having all in the same browser. This issue is even bigger with Chrome if your work account happens to be managed, as it may take over your browser's settings.