We have been here twice now- once around when they first opened and just recently. Overall, the food is good and high quality but I think it's more hype than it's worth. Slightly different? Yeah, but this is not some sort of earth shattering experience. There's a lot better places in Vegas for way less money.
We had a hankering for some ramen and decided to stop in here for a late night dinner. Apparently they don't have ramen on the menu for dinner anymore but they will normally accommodate if you request it (apparently) so we had the pork ramen. It was very good but not anything special enough to write home about. Granted, I have some high standards when it comes to ramen. This was in the top but not THE top, I'll put it that way (the top spot is reserved for Magokoro in Albuquerque).
We also had their oysters and split a pork bun to see how they measured up to others we've had. Everything was great but generally overpriced for what you get. A dozen oysters was $46. There wasn't anything special about them and the sauce/vinegar? (whatever you call it) was just ok. The service was fantastic though. Apparently they also charge you for plain water which is annoying. It was only $2 but to be nickle and dimed at a place this expensive is just plain bad form in my opinion. While overall decent, I don't think we'll be back. There's too many other great places around for as much or more $$$.