Icebore is right
While the generic charts offer the "safest" option by placing the greatest restriction on holdover times, one would have to question why airlines, knowing what they know about winter weather delays would ever want to use them.
While I'm not rubbishing them (as not all brands of fluids have their own brand specific holdover times) if the fluid application time or airfield delays are greater than the holdover in the generic charts it just becomes an exercise in wasting money and time.
Moreover I believe it can and does put aviation personnel in difficult positions.
If your airline does not recognise the value of brand specific holdover perhaps now is the time to enlighten them.