Speaking from Northern British Columbia, my experience was completely different. I too have had two Subarus and two Audis, all with all-wheel drive. Each winter I put snow tires on my cars and the all wheel drive cars have been great. I took delivery of my FFE last fall, and purposely drove into winter conditions with the stock tires. Let me say that they are simply terrible on snow and ice. The FFE is essentially a one wheel drive car, with a lot of the mass centred on the rear (non-driving) wheels, due to battery pack locations. I purchased a wheel and tire package from Tire Rack, using Bridgestone Blizzak ice radials, and the change was dramatic. I did lose range, as the ice radials have a higher rolling resistance, but it made the car drivable on compact snow and ice. Even then, the car was no where near as surefooted as a Subie or an Audi. If you live at a bottom of a hill, and experience accumulations of snow, be forewarned that you will be going nowhere with the stock tires fitted.
Robin Sipe.