I tried it last weekend at Saks. It smells pretty much like the edt. I was anosmic to the musk in the edt, so I got poor longevity to my nose at least. The Musc oil gave me great longevity however. Go figure.
The only thing I don't like is that you have to dab it on instead of spraying from the bottle. The feel of the frag is very similar to the packaging. I get a very grey, dry feeling from it.
I personally didn't spring for it. I already have Rive Gauche Pour Homme and Rive Gauche Pour Homme Intense that have the same vibe.
I am really not a musk fan when it is such a prominent note in a frag, so I cannot offer unbiased opinion on this one. It is nice, just not for me.