the second part of my joke means :
that from Orange (a town in the South of France), you are not afraid to ride in winter, because the weather in South is enough warm to go outside in winter. And the South begins at Orange.
The lower the temps, the more slippery for your wheels, with less rebond.
For the lowest temp I skated, it was around -5 like Tomette. Temps are not very low around Paris during daytime.
South of Orange you have very often strong winds, like Mistral, that can be really a pain for skating (between 6 and 8 on Beaufort scale).
When I was a teen, for rollerskating on ice, I put staples and it worked ….