I have a bottle of Ho Hang that I bought a couple of years ago. This is in the updated packaging (red) not the original 70's one.
The scent is very similar to what I remember from way back when but there's an accord in its heart that I remembered and love but now, I only get whifs of it occasionally. I've never gotten the vanilla and tonka in this scent. But I do get a little bit of carnation.
However, as for the skank, I have always gotten a little bit of a sour/turned note if I wear it in the heat. This was true for the 70's formula also. I attribute this to the patchoulli (I guess in certain formulas), which does that on my skin when mixed with sweat. Civet does the same thing on my skin. Otherwise, I also get the soapiness, akin to what I get from Hermes' Equipage.
Try wearing this in different weather--and skin--conditions and see what happens. I don't wear it often but I can't seem to be able to let go of it either.