Crab, your right, I never re-read the original post. However I still stand by my post.
We have three conditions available, no icing, icing conditions, and icing. The only way of being informed of known icing conditions are a) entering into the condition of flight in icing conditions where you may or may not pick up ice, or from reports from other aircraft that have done just that and picked up ice. If the met report reports icing then what's the question?
The wise will carefully read met reports and if icing conditions exist will ensure that if he/she decides to procede then they have to ensure enough space below to leave the icing and continue or return as the case may be.
This icing thing comes round every winter and most of us seem to handle it well, survival has something to do with it!