They are very professional in connecting to our audience, they really get how important it is for us as an organization that we have great speakers come out of Ambassadors so I would say keep them! The only thing was when you ask questions sometimes there were answers given but then later nothing came up again even though other people had asked exactly same question which means not everyone got their answer at first time or maybe its something else? We use ambassadors every now nd than because i feel like if someone has experience speaking before my audiences can learn from others experiences too.