That is NOT... I repeat again... NOOOOOT what is being said here.
As if we would be that stupid to launch with iced up wings by adding 5kts.. jeez.. what do you take us for. Having flown Lears and Challengers in and out of wintery places, do you seriously think I would still be alive now if I had been doing what you are suggesting? I am the bane of the existance of both beancounters and grumpy passengers with a zero-tolerance attitutude towards wing contamination... this I will shove down the throats of anybody I fly with to keep them alive.
GlobalWarrior speaks sense.