I've sniffed the whole line on scent strips, tried a liquid sample of the Narcissus and have a bottle of The Fir Tree.
The CB scent I know best is The Fir Tree, and I do love it. It is exactly as the description indicates: fir trees with a bit of snow and just a hint of earth. I think of it as my It's a Charlie Brown Christmas scent (every time I wear this I hear the "Christmas tiiiiiime is hereagaaaain...." song from the animated movie) - quite lovely, just like having a fir in your living room and inhaling deeply.
These scents do not have a great deal of sillage, staying very close to the skin. The Fir Tree lasts for a couple of hours on me, gradually fading and melting into the skin. I think one of these would make a fantastic addition to a fragrance wardrobe - it really is a way to create a wearable scent-experience around yourself that is meant not to exude a perfumed aura as much as create a scentspace that allows you to live or relive a kind of experience - much more longlasting than most of the Demeters, though lasting power is not the strong suit of the CB line as far as I can tell. Again, my experience with the liquids is limited to The Fir Tree.
I love the creativity that went into this line, and will be purchasing a bottle of Mr. Hulot's Holiday and probably the Summer Kitchen scent. The website seems to indicate that there will be a sample program coming soon, so you can probably wait to test these in liquid form (my scent strips were from scent-systems in the UK) rather soon - ?
Ah - for what it's worth, I only tested my vial of Narcissus once but it was WAY too acridly floral for my taste - something about the flower and the acquatic notes came off as very unpleasantly high-pitched and I only made it through 10 minutes before washing it off. But I can see others loving it and it's probably worth a retest...
Hope that helps!,