This is why I like Vincent because when he hits you you die in one shoot

Avoid the Display Screen: At the beginning of a match every players chosen character and passive/ultimates are displayed. As a Vincent player, you won't to avoid being seen on this screen. Seeing a Vincent in the display screen does a lot to Vincents initial element of surprise. You're working off of the idea that most players don't pay attention to the slight change of characters that happen at the last few seconds before a match starts. To maximize the element of surprise, wait a few seconds for the match to begin and let the chaos of the gunfight distract from your character change. (Another thing that works in your benefit is that most people don't use voice comms, can't have anyone ruining the fun.)