Chris Reeve built his name on folders, but the fixed blades hold the same standard, and the lineup is best understood by what each one is for. The Green Beret is the military knife, developed with US Army Special Forces and offered in a 5.5 or 7 inch blade for hard field and survival work. The Pacific is the dedicated combat blade, a 6 inch clip point with a glass breaker built into the handle, named to honor the 1st Special Forces Group. Where the folders ask which size, the fixed blades ask which mission, and these two cover the heavy end of it.
The Inyoni and the Backpacker answer a different need entirely, a Chris Reeve fixed blade you can carry all day without noticing it. Both are compact full-tang knives meant for hiking, camping, and general outdoor use rather than tactical duty, and both take removable handle scales. Strip the scales off the Backpacker and it drops to barely over an ounce and a half, which makes it the natural fixed-blade companion to a folder rather than a replacement for one. Across all four, the build is what you expect from Chris Reeve, full-tang construction, Micarta handles that grip wet, and the precision that carries over from the shop in Boise, Idaho.