My dad gave me a compliment on it long after I'd forgotten I even applied it. Not over-applying either I guess. One spray to each side of my neck, one to the chest of my sweater and I think that was it. I suspect this was four hours later he commented, and he didn't even stand that close.
Myself, I've felt it disappears quickly, but I'm starting to think the same thing as you - it's got some sexy trick making me not smell it any more, but making other people still notice it.