Excellent point...when compiling kits we often think of how long we can survive, but we also need to think where we can take that kit in order to survive.  I don't know how many of you have been on a college campus lately, but a lot of the kids are wearing camo pants while carrying chairman mao messenger bags.  For my BOB I have worn looking camo pants, a sweater and a baseball cap.  All of my gear is in a bookbag.  I could pass as any other college kid, or grad student, since undergrad was a while ago.  This helps since I have 3 colleges in walking distance.  I have a map of my area with circles drawn on it to indicate how far and how long on can go on foot using different parts of my kit.
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Spemque metumque inter dubiis - Hover between hope and fear. (Vergil)