Very dry scent, with a very rich patchouli base with a hint of something boozy -- bourbon? Not too mossy, though, as so many patchouli scents can be. I also detect quite a bit of sandalwood here -- lovely stuff, possibly Mysore. Very, very nice.
The drydown is very crisp -- vetiver? Dunno -- can't say. Actually dries down far softer than Gucci PH.