Wrong Pace.
Wet mushy stuff did stick. Now it may start to freeze, but it certainly did not seem like it. It did not look like ice and it did fall off during the landing (was n't that violent really!).
But a couple of inches of accumulation on the leading edges of the struts and around the wing roots certainly got my attention.
You may want to call it something else but on at least two occasions the Auster collected wet snow and it stayed on the airframe to the ground.