Historiann has the details about a History Channel solicitation letter that states:
We’re open to many physical-types for the host position, but we’re focusing on finding more of a rugged, rough, and smart type. Think Survivor’s Jeff Probst or Dirty Jobs’ Mike Rowe, but with a background in American history.
Here’s a description of our ideal host:
Male, mid 30s – mid 40’s, blue collar intelligent with the right mix of humor and gravitas. Needs to be quick on his feet and have the ability to give game instructions, interact with contestants, and ladle out historical fact. Rugged but approachable and knowledgeable.