I was astonished by how good my FL1 was in snow. Tyres probably helped, but I could drive up hills where normal cars were left abandoned or had to turn around (hills) as though it were a normal sunny dry day. I literally laughed out loud!
I didn't get the impression that my DS was quite so capable - but it has standard-fit road tyres, and I could feel the electro-mechanical intervention of the terrain response doing its job. I suspect the FL1 would simply have driven up on its AT tyres and AWD without any fuss whatsoever...