I wasn't there, so I can't truly judge how he went down or whether the laughing was sincere or nervous and polite.
But I thought he came across fine and the audience warmed to him. I thought it was well pitched for a celebration of 15 years of MN. He had taken the time to write it himself, it included anecdotes that linked him to the origins of MN.
He was also very gracious in his acknowledgement of the heckle.
Obviously, if you are going to invite a politician there are going to be people who dislike his/her views. So it is unlikely that they will be loved by all.