The interesting thing about NIHCE and its short existence is that it's a startling reminder that the idea that health policy should be evidence-based is still a new one.
NIHCE's greatest contribution has been that, in insisting on being evidence-based as de-politicised any and all questions about what treatments should be available.
I think this week's US shenanigans have showed that de-politicising healthcare is a very laudable goal.