For my purposes, an E&E bag (wide belt loop) is simply a way to carry/organize basic survival items and small enough to carry with me EVERY TIME I venture into the boonies to hunt/fish/hike.

That one single time you leave your kit (or knife or gun) behind because it is too heavy or bulky is exactly when "Mr. Murphy" rears his ugly head!

That said, my vehicle BOB is larger as it contains items that I would consider a luxury item in a wilderness (or urban) survival scenario (i.e. tent/sleeping bag/axe/etc).