I've tested the EdP, and it comes off as a more powerful and "juiced up" version of Encre Noire. The spicyness in the topnotes last much longer comparing the two side by side. During the middle notes & basenotes the EdT takes on a dry, dark tone very quick compared to the EdP - which is still going strong after 1 hour (the woods are still there). The EdT seemed to take on that dark vetiver smell after only moments, and I can't see myself buying it in that strength as a few monotonous vetiver fragrances are already in my wardrobe.
I also applied 2x more of the EdT during this.
I'm left thinking "I'm not sure it's worth the $750 price tag." (Maybe if I collected crystal?