The final paragraph is great:
"About the only time the rivalry resurfaces is when tradespeople hired to work in the Adidas or Puma headquarters show up wearing the wrong kind of shoes. That's a tradition that dates back more than 60 years, when laborers deliberately wore the wrong shoes when working in Adi or Rudi's homes -they knew that if Adi saw Pumas in his house or Rudi saw Adidas in his, they'd give workers a free pair of the right kind of shoes. "Rudolf simply could not stand the fact that someone was wearing an Adidas shoe in his private home," Frank Dassler says."
Can anyone confirm this, or has experience of the rivalry?