Ehhh ... not a fan.

I just skimmed thru it, but it looks like most of the creasing/weighting could have easily been sorted by an extra loop, and that would make the mesh universal to all software. Using creasing/edge weighting you're left with a mesh that's software specific [possibly even version specific], and you've only saved maybe a couple hundred polygons, if that? I'm sure there are situations where it has its merits, but I'd rather see proper edge flow without the crutch.

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