Is there any movement on TACK recently? It seemed promising when it was proposed, for the reasons you mention, but I haven't seen any real movement towards impl

Is there any movement on TACK recently? It seemed promising when it was proposed, for the reasons you mention, but I haven't seen any real movement towards implementing it by any of the major browser vendors. The IETF proposed draft also seems to have stalled: http://datatracker.ietf.org/doc/draft-perrin-tls-tack/ http://datatracker.ietf.org/doc/draft-perrin-tls-tack/. Do people have objections to it, or is it simply inertia keeping movement slow?