Comment 2 for bug 871165

The info could be placed as right-aligned "background text" in the location bar, which could also display the file count and its total size of a selection instead of the free size of the current "folder".

Furthermore, it appears apt if hovering over an appropriate entry in the sidebar's device section were not only to display its absolute path, but also its total (if ro) resp. both used & free space (if rw).