My first thought would be no - not a safe blind buy. From what you've said about your friend's tastes, he's into sweet stuff. Encre Noire is dank and earthy, quite the opposite of anything sweet.
On the other hand, if he's getting into fragrances more and more, Encre Noire might be a perfect way for him to expand his horizons. When you own something, you're much more likely to give it more time.
So while it's not what I'd call safe, Encre Noire is certainly an appropriate gift for someone who wants to learn more about fragrances.