FAA Pilot garb

What would the well dressed FAA pilot have worn during Operation Tungsten and the follow on raids? Related photos I’ve found are PR shots of pilots in blue BD jacket/trousers and a Mae West , standing by an aircraft. With the waters being lethally cold north of Norway I would think they would have had something more substantial. (I know a few aircrew were forced down and rescued or captured) Something akin to a poopy suit. Also, how about USN pilots during Operation Leader? Something warmer than a flight suit and G-1 would be called for.