Evogrip Blackout 10 Swiss Army Knife The Wenger Blackout EvoGrip 10 is an innovative twist on the legendary Swiss Army Knife. This unique piece features PVD black coating on all of the implements to ensure that the tool never catches the light or draws unwanted attention. The ergonomic black handle features non-slip rubber embedded in the four major areas of contact between your knife and your hand. The results are increased safety, performance and efficiency.