John W. Metzger began his career as a "people's attorney," focusing on issues such as widows' pensions, probate, small business, and estate planning. He held public service roles, including clerk and referee of the Denver Juvenile Court. Metzger's business acumen was demonstrated through his ownership of rental properties and a cattle ranch. During World War II, he operated a munitions plant that earned an Army-Navy "E" for excellence. Metzger's leadership extended to his tenure as Colorado Attorney General, where he enforced state purchasing laws and campaigned against illegal gambling and the use of school facilities for religious activities.

John W. Metzger's political identity is shaped by a unique blend of populist advocacy and principled reformism. His early life hardships and experience as a "people's attorney" underscore his commitment to representing the common man. Metzger's tenure as Colorado Attorney General reveals a dogged enforcement of state laws and constitutional principles, particularly in banning religious activities in schools and ensuring compliance with state purchasing laws. His unexpected venture into munitions manufacturing during World War II, coupled with his later anti-gambling campaigns, highlights a pragmatic yet principled approach to governance. Metzger's ideological stances often reveal a surprising alignment with opposing factions, suggesting a highly calculated strategy to balance regional interests with broader ethical considerations.