Do not underestimate the effects of contamination on flying surfaces on aircraft.
"Attempting to get airborne with any contamination on the flying surfaces of the aircraft, you immediately become a test pilot"
As no two cases of contamination are the same, then watch out.
Someone has mentioned cost of deicing. Well I call that commercial pressure creeping in, right there. The old story, if you have to think about costs in this business you shouldn't be in it as an owner. You as Captain must be certain one way or another, all surfaces have been deiced. That is your job.
So if the authorities of the country you are a guest in, decides to hit your aircraft with deicing fluid, then it cant be all bad can it?
At least if you do prang on t/o you can't be blamed for attempting to get airborne with a contaminated a/c.
"Aerodynamics is a highly developed science, so don't pioneer"