Response to Opinions and comments on Verichrome Pan?

I have never used Verichrome Pan with the exception of having developed a roll that was in an old camera that was purchased at an austion and given me. But there seems to be a pretty intense interest in this film lately on the various lists and groups that I watch. What I am wondering, though, is what the H&D curve would look like with a double emulsioned film. As I understand it, one emulsion layer is faster than the other. That would mean that the H&D curve would be the sum of the other two curves and would contain bumps in the straight line protion of the curve where the toe of the slow emulsion begins to be exposed and again where the shoulder of the faster emulsion layer comes into play. If severe enough, that behavior could lead to compression of the mid tones in these areas similar to blocking up of highlights or shadows. Has anyone here done any sensitometry on this film with enough resolution in the exposure steps and if so do you see bumps in the curve? I expect that Kodak wold have fine tuned the two emulsion characteristics so that loss of mid-tone separation would be negligable or the film wouldn't have been any kind of success, but can we see these effects on a curve? Just curious.

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