Many of us have been using a 90 with a disconnect for years. Those with trailers can screw the disconnect male end directly onto the exterior water connection, tighten it with pliers and never have to worry about trying to connect again or leaking issues.
For trailer use, connect the male connector, snap on the female quick connector, attach the 90 and then attach the water regulator followed by connecting the hose. Now you just quick connect the hose to the RV and the faucet.
Don & Mary
2019 Newmar Dutch Star 4018 (Freightliner)
2019 Ford Raptor