Completely agree airvanman.
It's bad enough already when you get some airline station managers (and pilots) insisting that "it's only a bit of ice and it's only on one side....blah blah...it'll delay us...blah blah...but de-icing will screw our bonus this month...."
If they get wind of a get out claus that may apply under certain conditions they'll be leaning on the certifyer to pen it off all the bl00dy time.
At little knowledge is dangerous!
(I should know

)
Get it de-iced.