The catch is always that an FAA IR course is always done on a non-IFR certificated helo (R22,R44 IFR trainer), so you can never experience actual IMC. Likewise, CFIIs having done everything in an R22/R44 lack experience from actual IFR operations.
I did my IR at Cloud 9 heli in Florida and I can recommend it. Geoff has actual experience from flying an IFR-certificated A109.