Shipping a BOB to me was not one of the considerations when I started thinking about .. ummm. multi-BOB system <img src="/images/graemlins/grin.gif" alt="" /> (OK not a cache system) !! I think the idea is that in a catastrophe I may reach at my sister's house with little more than my PSK or even nothing. BTW, you ought to see my sis when she sits with my DW and ROFL while joking about me and my BOBs. <img src="/images/graemlins/grin.gif" alt="" />
OK. I arrive at her house , or my old dad's house , and although a shelter is available, having a good knife, a boncho, or whatever is definitely a boost in a bad situation. If my dad or sister were prepared, then I can assume they have some extra preps to divide or share. But you know how it is . Candles in my BOB maybe the only candles in the house in those times. That is not to mention the possibility of me grabbing the BOB and moving further. Why and how ?? Well, it is always possible that a mess happens and I dont get far or fast to the kids in their schools. I leave the DW, or one of the kids at my dad's, grab an extra BOB, and go back to search for other kids.
Besides, digging a cache from underground is , well, not normal, but having extra BOBs, isnt that a big deal IMHO. It only requires good planning and figuring out more safe places/points for caching than anything else.