To add to mystery when I talked to howards about the hughes grinds he said hughes sends them the masters and they just grind them, he made it clear they are not howards grinds but was nice enough to give me all the timing specs.
From what I'm seeing the Howards lobes are used on Hughes cams, but they don't share the same duration splits or lobe separations in their respective shelf cams that use the same lobe profile. IE Hughes cams aren't reboxed Howards shelf cams.