Many of the shoes in my Minsk wardrobe have Topy oversoles. The crazy thing about Topy oversoles is that when they finally do wear down, they seem to be even more slippery than the leather they cover!
I received a nasty concussion from a slip and fall while we were visiting with friends at Dudutki last January. The old Topy-covered Grenson derbies I'm wearing in the right-hand panel were over my head and silhouetted against the sky faster than anything I've ever experienced.
You can see what was on the ground. It was the first good snow of the year and the paths were icy and slick. Fortunately, the sable hat and some of Dudutki's famous vodka saved me from further injury.