Russ,

It is common for a double bit to have two different profiles, as shown in the USFS book that Kevin got his information from.

The "Cruiser" you posted is not the same as the terminology I learned. My use of cruiser is the same as the definition in yerteryearstools:

cruiser: one who estimates the potential lumber yield from the standing timber on a specific tract of land and may mark out routes for accessing the area. (also: estimator)
cruiser’s axe: a small version of a double bit axe designed to make markings by slashing the bark such as when blazing. (also: timber cruiser’s axe)

See: http://www.yesteryearstools.com./Yesteryears%20Tools/Glossary%3A%20Axes,%20Edge%20Tools,%20etc..html

Typically a 2 to 2.5 lb head on a 27" or 28" handle. They would have been typically ground the same on both sides since it was primarily used for blazing trees for removal. If yours is like this, it is also my favorite axe for most things.

Respectfully,

Jerry