Looking forwards to someone saying they are extra careful on frosty mornings....
I bet you are & I'll bet there are a few others waiting for that too.
I've only got about 120hrs on my Cont C90 off a grass strip, but the only time I had any apreciable ice was in high summer on the ground.
As a result I usually taxi with carb heat on, just for fun!!! regardless of the time of year.
No doubt I should select cold in the winter cos it doesn't need it.