I really like this series and the characters, so I hate to say something negative about it. But I'm going to put this out there to provide some feedback.
The new art doesn't fit. It's drab. Looks like it was washed in something brown. I really liked how the Upchurch art was crisp and bright and cheerful. Also, the characters emotions are not coming across. The facial expressions really added something to the quirkiness of the comic and that is much more dull now.
The artist is talented, but I just think the fit is wrong.