I would say the most common responses I hear at club games to the question "leads and carding?" are, in some order: "standard," "odd/even," "lavinthal," and just looking at me dumbfounded. In fact, once, a woman told me "lavinthal," and I repeated "sorry, not your first discard. Your leads and carding agreements please?" And she snapped back "well we don't play that way." Additionally, it is problematic that "standard" can mean (in practice -- and good luck getting a ruling on this!) "standard leads and carding" or "we have no agreements." Occasionally you hear the almost musical "3rd and 5th, upside down count and attitude" Obviously the nonsensical answers are far less common in the upper flights of flighted events.