When the roads are icy, I wait until the rush hour accidents are finished before thinking about setting off to work. Rather get to work late but safe.
If roads are too icy I won't chance risking an accident as I don't fancy having to sort out the hassle of getting van repaired and being off work longer than could have been prevented.
I use to do trad cleaning all the time. Came off a ladder so I remember how painful it can be. I have a lot of respect for ladders and working safely using them. I only use ladders on 3 commercial buildings to gain access now. If roads are icy there is no way I would risk going up a ladder, so for those of you who do risk icy conditions, just be safe and don't put greed before safety