My take on this, from my review on the Santal Blanc page in the Fragrance Directory:
Oh, this is a very odd scent; but who said odd was bad? There is something very unsettling right at the top, and most people seem think that it's the fenugreek. Who am I to disagree? I don't have a better theory. Fortunately, this awkward stage doesn't last forever; eventually Santal Blanc settles down into a spicy, musky iris groove. Then it's fine, but it does lose some of its projection at that stage. It should be obvious by now that this one isn't for everyone. I go back and forth on it, but today I'm giving it the benefit of the doubt.