If you can get moving ease off the revs and just go up on the tickover in 1st gear if you can, although slow, if the hill is not too steep it will work.
Touch wood, I have never come a cropper in the car on ice but... Came very close a couple of years ago when I just slid down a camber towards a parked car. Stopped a foot away but the feeling of helplessness you get when you realise you have no control is very scary.