One might have 500ft at the airfield and a perfectly good alternate for IFR transition, but it’s only when you get into the mission that deteriorating conditions force your hand...
Personally, I’m a suck it and see merchant If the info is genuinely life threatening, not a “risk accessment chappy”
However, that being said, these guys train for serious **** day in and day out, and I know which face I’d rather see hover taxiing under the wires if my guts were hanging out....