I ended up with the Bois d'Iris. Here's what I said about it in a blog post:
A name that's been used before for an iris scent, also a dryish one, by The Different Company, and which was one of my first niche purchases. The VC&A one, issued this year as part of their Collection Extraordinaire, has a different slant, though, and for me, a more memorable one. J-C Ellena's scent under this name for TDC is typical of his later minimalist and rather stark style: iris, bergamot, cedar, narcissus, and geranium, all precariously balanced on a narrow base of musk alone. VC&A repeats the cedar-iris-vetiver triad, but leaves out the florals and dries it out with frankincense, and then sets it on a very effective dry-sweet oriental base combining dusty myrrh with rich amber-labdanum notes and sweet vanilla. Very dry and spare at first, this blooms as the richer base notes vie with the dry and dusty ones to make a beautiful and poignantly supportive counterpoint.