the P4 S is amazing in the snow. We just had that Toronto ice storm and I was driving everywhere with Pirelli Sotto Zeros. This car is more amazing than the 911 in the snow.
Also realized that our 2 golden retrievers like the car better than our S class and X3 since the door threshold is lower. With rear seat covers, and 4 winter tires, this has been our best winter car ever.

 

Tires make the difference for a safe, pleasurable winter driving experience in the snow. My rear wheel drive Panamera with winter tires is excellent in the snow.
I wouldn't rely on all season tires even with all wheel drive to do the job, its just not worth the potential outcome.

 

For sure...
all seasons mean "no seasons" winter or summer.