I think how quickly the aircraft reacts to a specific change in OAT depends on the type.
Just think inversion layer. The aircraft can be colder than the OAT on entering it and colder on leaving.
Not a major problem that I could think of, unless you can't clear the windscreens and needed to do so in a hurry.
I've seen it a couple of times in Germany when based out there but we had heated screens on our Pumas so it wasn't a problem. I've also watched it form on the wings of commmercial airliners (cold-soaked fuel tanks).