[Alan B'Stard]

Yes, the actual 10bit display is not so important; many displays are incapable of this anyway; I myself have nothing that supports it (although my laptop *is* available with 10bit display).
10bit colorspace is important for intermediate processing of animation, i.e color gradients which otherwise tend to develop color banding.
There's no perceivable difference for most live action visual meida, afaik (well, except maybe some dawns-sunsets).