DonnaMaree, you might want to visit Mr. Guerlain's website to contact him, sometimes he misses posts/comments on Basenotes since he's not as active here as he was in the past.
I own and enjoy Vol de Nuit in the EdC formulation. It is preferable to the EdT (which I find too powdery) and don't let the Eau de Cologne fool you: It is not the 'masculine' version of the scent (there is no such thing) nor is it a 'light, fresh, splash-on-version' this juice is strongly scented and has a lot of presence, longevity, sillage. Of course, because all VdN EdC is vintage, some bottles have aged better than others, so your bottle on its way may (or may not) have as much 'oopmh' as mine. Still, because of the (now banned) ingredients in the vintage juice, there will be a subtle strength to it that is hard to describe but is very much evident.
The 'herbal' quality is not aromatic or pungent at all, it's soft, slightly crisp and very much in the style of many 'classic' Guerlains, in that it has a lot of Guerlinade.
Of course, if you love it, then I highly recommend you smell the parfum. It's fantastic.