Mike,
How long is this scenario for?" Who knows....does that really matter? When you prepare for a situation in which you are trying to survive...do you prepare for a predetermined length of time? In real life scenerios...most modern survival situations are a pretty short term event and I prepare as such. In reality, the 5 matches (I carry 10 BTW <img src="images/graemlins/grin.gif" alt="" />) and the 12 hour Photon will probally do me more good than the 6 inch belt knife. By the same token...I do try to practice primitive living skills and am constantly trying to learn new things....but I believe in using modern tools when possible and practical.
I think we all have to have a strong basis of knowledge in order to really be prepared for whatever scenerio. Yes...I can make fire without the aid of anything but a knife and a string....but why would I if I didn't have to? That knowledge base is important and you should never totally depend on modern conviences, but it's not a lot of trouble to carry a bic with you. Anything that I'm carrying isn't radically different from your list of things that rest in your pockets (according to your above list).