Or Fight Club.
On a semi-serious note, the comments about axes and chopping are based on tasks which the current chopping knives are not used for. It would be like using the recommendations of knives used to butcher whales to defend the arguement of fillet knives for trout.
Most people using knives for chopping wood in a survival situation are cutting very small wood. You don't knock down a 12" tree (which is several hundred pounds) to build a lean-to, or start a fire. This is all done with very small wood, even four inches is at the upper limit and not necessary even for a small cabin. There is a group of kinds actually building a log cabin on one of the lots I am currently clearing (all family), and the sticks they are using are all very small. Makes ease of construction very high, try carrying around 6-8" thick logs, with people complaining about the weight of a 10" bowie on their hip, I don't imagine a several hundred pound tree would be too comfortable. Now set it up and hold it in place for construction purposes, now consider dropping it, fall or otherwise lose control and see the relative danger. Having working cutting wood for many years this will happen, and it only takes once to kill you. In an emergency situation working with that wood ouside of the absolutely necessary screams "rambo delerium" to me much more so than a nice long knife.
As well consider injury, doing some really stupid recently I strained one of the tendons in my right leg. It really bothers me now to put any weight on it, trying to carry a tree of any size would be near impossible. As well trying to swing an axe two handed would not be functional as well. However I can still readily use a small saw and large blade to cut down small trees, section them into lenghts and work on other such materials. Not to mention the other advantages of long blades such as cutting light vegetation for construction, food, bedding and clothing. Trail clearing is rare here, but also has value in certain certain situations.
That being said, I have many axes and use them all for various tasks, including "field work". In very cold weather axes have a large advantage over most knives due to the ability to cut holes in ice, but a khukuri can do that very well also. Long blades also are much nicer to work with for snow based shelters than axes which are then next to useless for cutting and shaping blocks. As for history of use, many heavily chopping natives, and other "experts" can be found to endorse blades, and very thick ones as well. Just look around and remove the focus off one particlar viewpoint. You will find very thick khukuris, long and thick parangs, bolos and all variety of blades used for wood working.
Back to axes and wood chopping, saws replaced axes almost instantly as well for bucking and felling. They are much more efficient, much safer and the edge retention is much higher. They are somewhat more limited in use though, but aside from felling and bucking, a nice folding saw comes in very handy for construction, both shelter building and trap and tool making. The ability to quicky cut neat notches is very nice. This is one of the reasons I like a quality SAK. The decent sized large blade and saw will allow easily cutting of shelter sized wood and is very versatile (change the large screwdriver into a chisel and you have a very nice tool). I carry other folding saws when possible though as the SAK saw is a little short. I have a folding swede saw (almost full size) in the trunk of the car, other folding saws in the glove compartment and on me if I am wearing a heavy coat.
I would currently carry for extended woods work something like :
1) quality saw for bucking, felling and notching. I like japanese saws, but still don't trust my skill level yet not to break them in times of high stress or impaired mental state which is why I would prefer a quality swede saw in an emergency.
2) small blade for any carving and other precision work, a decent SAK is really nice, I like a nice narrow blade as it makes turning much easier, the bandicoot would be nice, but there are lots of other great blades here like the Temperance from Spyderco, Deerhunter from Russell, almost anything from Boye, etc. . A wider blade like the Howling Rat does does offer a more versatile grip on the blade, and I would not be put off depending on that either.
3) long blade for limbing and other brush clearing and waste removal when felling, and bucking of semi-soft woods, or all woods depending on physical state. Still looking for the ideal one of these have tried a lot. Definately plan on picking up a MOAB later on, and waiting for Swamp Rat to get a decent long blade in the line.
For most EDC I would carry a much finer knife for most cutting, the new D2 Swamp Rat line looks to be a solid choice, and a more pry bar class knife like the Camp Tramp for rougher utility work (that would be a nice addition to the above three for woods work in regards to scavenging materials usually).
Fine looking blade by the way Jerry.
-Cliff