can't speak to the Hueys, but we have a 3 month EP sortie currency requirement. Mandatory items include a hydraulic malfunction, stabilator malfunction, engine malfunction, single-engine approach/landing, and straight-ahead/low altitide autorotations. Besides the fact that helo sims are only at Kirtland (24 month currency for sim refresher), the sims do a very poor job of modeling takeoffs, landings, and autorotations. That stuff HAS to be flown for realz. So landing from a Boost/SAS off situation, when the helo is statically/dynamically unstable, needs to be done in the actual aircraft.
We actually allowed to log one EP sortie per 12 months in the sim, but our next EP sortie MUST be in the actual aircraft and MUST include autos.