Frontsite, Piter,
It's good to see dedicated people take time to present reasonable idea regarding this topic. I never was interested in polls (LaBella) or in popularity contests. I am interested in what works best for a given situation.
My misgivings regarding embracing the HAK whole-heartedly arise primarily from the blade configuration. The following will be my personal opinion, drawn from my own personal experience only.
A blade like the HAK "Claw" will be most effective if used solely for defensive purposes. The reason is that the primary purpose is to slice. Stabbing is secondary. Yes, with some tissue compression, you can more than double the damage of the stab, but that will not really be enough to stop a sizeable attacker. One must attack arteries (wrist, armpit, thigh, back of leg, neck) to cause enough significant blood loss to cause a determined attacker to go into shock. I believe the "hooked" type blade will most readily tear through heavy clothing if need be. Also one can still pick an eye and stab with this type of curved blade. Again, if used solely for defensive purposes. Yes such a blade could do other chores as well, but not as well as other blade profiles.
Now, if one primarily will use the blade for the myriad of tasks that Piter and I have in mind, then (IMHO) the "Claw" is the least useful. The "Straight" HAK would be mediocre, the perrin La Griffe slightly better.
I believe that the most useful blade profile for chores, etc. that could also be used very effectively for self defense would be Laci/Fred's "La UUK". Check it out here:
http://www.szaboinc.com/index1.html
Such a blade configuration would eliminate most of the gripes I have been referring to in this thread. In a canted configuration such as that of the "straight" HAK version, there would enough belly to be able to cut with a "significant" part of the blade for chores. I would think that the blade would not be double-edges as is Laci's.
Such a blade would be the perfect Hideaway, as it were.
Now, the La Griffe, let alone the La UUK, would still be more potent if used in a reverse grip for defensive purposes.
As it stands, the La Griffe can do small camping chores more effectively, (IMHO) such as whittling, skinning game, preparing fish, etc.
The Perrin La Griffe looks more innocuous in a court of law, (IMHO).
As for as carry options, I like one that isn't perhaps as grand as you may think, but was suggested to me by the LAPD. They don't like to see people wearing neck knives in any sort of "tactical" location, as such carry shows a purposeful intent to use a blade for defensive purposes. They suggested a pocket carry. Frontsite, I like the "Ripp-cord" idea, but it could still be misconstrued by our PC, anti-gun society. therefore, why not make a nice leather pocket wallet sheat for it. That way, the next time you get searched by the cops, you will be carrying a tool in your money-clip, not a "human velociraptor".

One could also retain a kydex sheath in pocket with velcro.
I really like the design, idea, and support that goes into the HAK line. I just think that with a diffeent blade configuration it would be slightly more useful. Also, the non-professional should be advised that carring an HAK in any of the carry modes suggested, while tactically more useful, would really be frowned upon in a court if you survive an attack and have to defend your actions.