Have heard of it being done in Anchorage. I would assume that there must be some sort setup between ATC and a particular company to do this or some sort of general procedure for certain companies to get a vehicle out to a taxiway near a runway.
That being said, having flown in cold areas for many years in the past and reading accident reports, I have had a bit of experience with frost. For aircraft such as the old DC-9, F-28 and CRJ-200 types with no slats, it is best to be very paranoid about wing contamination. These appear to be unforgiving small amounts of it.
One has to conclude that over the years many jet takeoffs have been done with contaminated wings of varying degrees yet virtually all the accidents have been with the so-called hard wing aircraft with no slats.
So what to do if you discover that the little bit of frost that you had on the wings prior to departure is still there because you forgot to de-ice and you remember this just as you passed V1. Reject perhaps?
You are the PIC and that is why you get paid the big bucks but I would suggest considering a deliberately higher speed be used for rotation and that it be done at a slower rate to a lower pitch attitude.
Also be careful when it is just above freezing and you have the drops of water on the wings. It is quite possible that they have frozen as the temperature dropped so de-icing liquid water might be a good idea in some cases.