Clandestino,
Your post on page 24 was RIGHT ON THE MONEY!
I haven't bothered looking at PPRune for quite a while and the little snippets I have read of this thread remind me why!!
The start of the thread was of a crew who used airmanship and courtesy to inform some fellow aviators that they had snow lying on their wing. My company , as I am sure all other reputable companies, have some pretty good info regarding ice & snow along with some very sound advice about holdover times.
In bad weather I have always found the expression "Any doubt = no doubt" to be a safe and sensible advice.