"I must say, my bottle has matured spectacularly well over the past 5+ years. When I first got it I enjoyed it but had a distinct impression it was a bit watered down and I could spray the entire bottle on without sending people running. In the mean time it would seem to have concentrated but the bottle doesn't appear to have seen the juice contract that much. It's become stronger obviously, but also a bit sweeter and I can definitely detect many more notes than when I first got it."
When this person states that the bottle "doesn't appear to have seen the juice contract," he's referring to the chance of some liquid volume reduction due to alcohol evaporation, which would lead to oil concentration and a stronger perfume. I've had this happen with several retail-purchased Creed GITs and Orange Spice. Initial perceptions of GIT is it's weak and transparent in nature for the first few wears, at which point I'll put it away for a while. When I return, it's a completely different story. I recall one bottle starting out like water, and a few months later it had grown so potent it was almost unwearable (and had reached a Joop! Homme strength). Orange Spice also changed, going from a few thin hours to double shifts of pounding Valencias within five years. I've since then witnessed dozens of people commenting on the same thing happening to them.
It's intriguing that Ferragamo's scent is cited as one that undergoes in-bottle maceration after first use. My take on my new bottle is that it's pretty potent for two hours, and then dies down to roughly less than half its original strength. This behavior is aligned with the behavior of other fragrances that kept macerating while in my possession. I wouldn't be the least bit surprised if it developed into a different performer over the next year or two, and I will keep you updated on that.