I've never tried an Aman outside of Asia, and have heard the comments made above as well. But honestly, I'm sure it's possible to re-create the experience here, it's just about cost. But again, importing folks on 3 year rotations from other Aman's I would *think* would solve that problem. Work visas, cost of living, I can see how the costs would be higher.
My point is - I think there's a market willing to pay for that in places like Hawaii.
I keep asking myself why I'd want to go to the FS or RC in HI when I can go to an Aman for sometimes similar room rates. I realize Asia is another half way across the world, and I travel internationally all the time, so to me it's a no brainer, but to others it may be a stretch. So.. even more of a reason to consider a higher priced option with this quality of service stateside..