Disclaimer: I am somewhat of a Bpal n00b, but here goes:
At first sniff (in Imp): VERY grassy and the faintest touch of smoke/spice. Intriguing.
On skin: Mmmm. Smoky, sweet and spicy indeed - really deep and evocative.
Drydown: On my skin, it's very incens-y...still sweet and smoky, but it's gone a touch powdery on my now. I'd have thought I'd hate that, but it's quite comforting (kinda reminds me of my nan, but in a lovely way).
I'm very new to scent notes, so I can't tell my vetiver from my orris (haha). I'm assuming the spicy grass is vetiver, the woodsy/sweet smell is orris, and the incense tonka?