I churned it once. Got three nights at the RC Vienna gratis.
There were also some credits ($200?) I used on travel reimbursement.
It also may have a free Global Entry reimbursement ($85 - $110). Can't recall if I used that or not.
Anyway, the net annual fee ended up working to $85 a night all-in for an upgraded RC room. Of course I never would have paid the $500 or more a night that the normal rate was, but it was a tolerable spend to over-indulge.
We churn CCs a great deal to pay for all our spendy trips. It still costs money, just a more reasonable rate.