Well, to address the knife issues first, the Harpy's a normal everyday knife, i have one myself, hawkbill blades get an unfair reputation as "evil" knives, thanks to movies/books like the Hannibal Lecter series....
what do i use *my* Harpy for?, mundane everyday stuff, cutting down cardboard boxes, opening packages, scoring boxes to peel shipping labels off, cutting apples, everyday stuff really, the downturned point of a hawkbill gives the user an incredible amount of precision point control from a normal grip position
the Civillian? Spyderco developed *that* one for law enforcement agents that may be caught in a dire predicament where they have lost their firearm and have been reduced to defending themselves with a knife, the "Reverse-S" blade (modified Hawkbill) is designed as a defensive blade, for pull cuts, lets say an officer in a chokehold, the officer deploys the Civvie, and performs a draw cut along the assailant's arm, there's a good chance the assailant will let go
the Civvie's not designed as an EDC blade, more of a "when the fecal matter hits the air circulator" kinda' blade, Spyderco says right on their webpage;
Spyderco said:
In the 1990s Spyderco was approached by a specialized branch of U.S. law enforcement about making a knife for their undercover agents. These plain-clothes LEOs found themselves in situations where they often could not carry a firearm but carrying a knife was not a problem. Most had no formal training in self-defense tactics or MBC but as a last resort could use a blade to protect or extricate themselves from a life-threatening situation. This was how the Civilian model came to be.
The Civilian has a patented reverse "S" blade that's intended to be used like an oversized claw. The tip is ground to an ultra-thin profile. Deeply curved and full at the belly, the VG-10 hollow-ground blade excels in slicing and is available fully SpyderEdged. Because of its distinctly specialized features it is not intended or designed for general utility or everyday use.
I agree with Digdeep as well