I don't make a distinction between BOBs and GHBs. Actually, I don't ever intend on "bugging out". Why should I? I have what I need here at home, and home is in a safe place. Its sort of like the saying regarding the use of a handgun...you use the handgun to fight to your rifle. My home is my rifle.
Being able to get home during some unexpected emergency event is the issue I personnaly am most interested in. Whether its a breakdown some where while on the road, severe weather that leaves me stranded in the car, or any number of similar scenerios that disrupt your ability to make it home in the normal way.
Around town its not too much of an issue, but traveling is a different situation. I throw a GHB in the back that contains those items that will allow me to eat, provide shelter, provide warmth, water, several different ways to make a fire, know my location, provide illumination, keep dry, and hoof it home should that be required. (I provide for my own security daily, so including weapons in the GHB is not needed)