I've done a bit of a turnaround on this one. It's very temperamental in terms of sillage, but it does last longer and project better than I used to give it credit for. Case in point: I was testing several scents on cards one day. At one point I was sitting and relaxing with about 5 cards in front of me, including a few Bond no 9s, some Jo Malone, a Hermes, and on a whim Floris Sandalwood. I kept distinctly smelling the Floris from a distance over the others, but when I stuck my nose in the Floris card to get a good whiff, it really didn't smell that strong. Weird, but interesting. Further testing revealed that the fading in and out effect even more noticeable when the scent is alone.
Behavioral discussions aside, it really does feel like a single-note sandalwood. It starts very alcoholic and gradually - in fits and starts - morphs into a fuller and fuller sandalwood note, with little else there. I used to think it didn't have enough depth...but I failed to realize that you aren't going to have a single-note sandalwood with depth. You want depth, get Santal Noble. At trying to convey the smell of pure sandalwood, Floris succeeds in a way that even Tam Dao can't match.