Good post FFF, reinforces what a crusty old sort in his 90's told me when I was doing my IR, he had been there in the begining as an air mail pilot in the 1920-30's and a production test pilot during WWII.
What he said about Icing.
You will find it where it is.
You may go flying in a clear sky not expecting it and find it and you may be in the clouds expecting it and not find it.