Swiss Army Swiss Cow Evolution 10 The Swiss Cow Evolution 10 Swiss Army Knife by Wenger pays homage to the spotted fixtures of the Swiss mountainsides. Carry a little piece of Switzerland without leaving home. The Swiss Army knife was built on the premise of portable functionality. In 2005 Wenger developed the first ergonomic Swiss Army Knife, making resourcefulness more comfortable than ever before. From this development came the Evolution 10, with concave and convex contact points perfectly designed for the human hand. Hold