Interesting... I know I've certainly cursed when I've been working mostly at a top level folder (my docs or something) and then had to switch over into one of my common folder tab dirs that is located deep in some other dir structure (and which I cannot really move). The folder tree clutter that ensues is an inconvience...
Having a TV per tab has several benefits but the main one is that when switching tabs your view/location within the TV is preserved/restored ... no more hunting to re-locate your position.