For staff, you still definitely are a +1er/decapper, but with some added brawling/teamfight ability. So yes, you're more capable of 1v1ing, teamfighting etc, but you are still a thief at your core. You're just a bit more versatile is all. You trade stealth and single-target/chase ability for more versatility. Hope that helps!Edit: Keep in mind, though, that while it is very possible to fulfill those roles, it is more difficult, and you have to play an "Unorthodox side-noder" of sorts. Use your mobility and evades in a reactionary way. It is a high skill-floor type of playstyle.