I like the tactility of this a lot. Much superior to bread crumbs. Will the back button still work? Using pushstate I presume? If so: then you have the best of

I like the tactility of this a lot. Much superior to bread crumbs. Will the back button still work? Using pushstate I presume? If so: then you have the best of both worlds. Advanced users can still open tabs, hit backspace to quickly navigate back (or 'up' in this case) — and regular users get a radically faster and more spatial way to navigate.