I thought white Julien did ok. He was obviously very nervous, but for his first time ever hosting the show he hasn't bad. Korey has such a specific format in producing the show, from his hosting style to the way he works the cameras to the way the controls are set up, so I could see why it would take some time getting used to for someone who hasn't done it before.
This whole time I thought his real last name was Humdinger and Korey was calling him Hemmendinger as a joke, but it turns out his real last name is Hemmendinger and he went by Humdinger because he thought his name was too long.
