And that was my only intent based on some previous replies. I guess I could have stated that more clearly in the beginning.
Very true. Some of these people were under my command and I fully understood their missions very, very well.

Not everyone that I went through SERE school with were pilots or aircrew.
From the get-go, as I understand it, the term 'survival knife' was first associated with the needs of military pilots. Obviously the whole survival knife concept has greatly evolved since and, significantly more inclusive of any and all who might have need of a tool that is refined/designed to fit their very specific requirements.
I agree with the poster who infers that a general survival knife, good enough for survival (all things considered) would be adequate for SERE. In my own personal experience, this is the way it is. As much as I love to use and collect knives, I have and would emphasize other pieces of equipment, equally, that would assist ones ability to even use the knife in a survival situation (I have some stories). A wilderness and survival forum should consider ALL aspects of survival and hopefully not go with the propensity of fixation on one piece of valuable equipment.
Again, SERE is ultimately about moving from where you are to where you need to be (this is not a camping trip). If this was not so, you would be issued a larger toolbox with better accommodations. With regards to the knife specifically; and if the environment allows such; the larger knife may allow you to stay in one place for a longer period of time. However, most always this is not what SERE is about (rare exceptions). There are times when SERE would be best accomplished with ultra-light attire and minimal gear. Other situations would be best addressed with the whole enchilada. We can throw this knife up, and that knife up for consideration, but we need to be more specific about what the duties of the knife are going to be based on the environment, mission and task. Vietnam was machete weather. Iraq and Afghanistan may require something different (I'm guessing I would exchange that knife for a little shade).