If winter temperature for you consistently drop below 7 C/44 F , swapping to winter tires is necessary regardless of what wheels your car powers.. AWD gets you going from a stop but does not help you in braking when the tire compound hardens. Think of it like a hockey puck
In flatter urban environments with good snowplowing or low snowfall (honestly Toronto has not seen much snow this year), RWD with winters is more than enough from friends who daily F8X and other RWD cars. When the snow piles on an AWD G8X will be superior but still lacks the ground clearance so you still need a shovel handy LOL... i shall see for myself soon
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G82 M4C - SPY, YMB extended, 826M Black, Carbon Buckets, Carbon Inlay, Prem Pack, Driver Assist