I don't think he was awful. Gregory was extemely rude. Van Hollen was also extemely rude and hostile and tried to filibuster.
Pence had command of the facts and his only fault might be that he's too nice.
Gregory and Democrats will ALWAYS be rude to ALL conservatives... if Pence had command of the facts, he was unable to voice to them in the time allowed... maybe he should stick to C-SPAN where there’s time to compose your thoughts.