Ive got mates who havent played valo in like 6+ months playing the game again and having fun. Ive been able to merge to friend groups together to form the seven people to make the team. Maybe its because we are 2 - 0 but im having a blast...

Basically what the title says. I've seen many people who are very good with the op doing this thing. They shoot and then quickly switch to the knife and then back to the op. What benefits does it have?