I recently bought a bottle of Fleur du Male Cologne, and upon wearing it the first few times, I was shocked at how different it really is. The only thing it retains from the original is the powdery iris, a bit of orange blossom and some of the general character.
Otherwise, the cologne version on the whole smells like stinky feet, talcum powder, orange blossom and leather. It's dirty and clean all at once, and quite frankly not even that wearable. The only thing that holds it together is that it has this barber shop clean talcum thing going on. It's actually quite dry compared to the original (I see the original as being the equivalent of orange blossom shaving cream, while the cologne version is like talcum powder you'd use on your neck after shaving). While the opening is far sharper and more citrusy, the musk is toned down a lot, and replaced by a dry and leathery kind of suede note.
With all that in mind, I really love it. It's quite unique and has this interesting animalic/indolic vibe to it that's not dirty per se, but just very alive, like the smell of a human (as someone mentioned above).
Anyway, if you didn't like the original, I don't think you'll like the cologne version. If you did like the original, but want something just as interesting but less potent, then the cologne version might be up your alley.