Sturmey Archer gears and brakes are fine in winter
I commuted all year round in Toronto on a Pashley Roadster with a 3 speed SA hub and drum brakes. It worked great and I was amazed at how well it handled in the cold, wet and snowy conditions. I didn't use anything special for the tires: regular Schwalbe Marathons work fine. We had kids so I traded it for a cargo bike but I'm looking to get another similar SA equipped bike very soon.