Would I (since I am "the unprepared wife") agree to DH's escape plan?

Hum. Several years ago, I'd let DH do all the emergency planning that he wanted as long as it didn't affect my life. So, he couldn't spend extravagent sums of money on supplies, but he could choose to use his personal discretionary money on whatever supplies they would buy. He could stockpile whatever supplies he liked as long as they didn't get in my way. He could plan whatever escape routes he wanted as long as he didn't make me scout them out with him. Etc. I think you get the idea.

I thought that DH was a bit extreme; however he didn't impose his preparedness on me. So, you could say that I thought the stuff was BS and I didn't buy into any of it. I suppose if TS ever HTF, I would have been grateful for his planning; however, we'll never know as we never experienced a major calamity before I was at least partially converted.

How was I converted? Slowly and quietly. I could see that DH liked the preparedness stuff. He would reorganize his BOB in the living room where I could see and ask what the heck he planned to do with all that stuff. I was (and still am) skeptical about most of the stuff, but eventually I saw how his techniques could help maintain my comfort and convenience in less extreme situations. That slowly but naturally let to me being more prepared for more dire circumstances.

IMHO it doesn't matter whether your family buys into your escape plan before TSHTF, as long as they let you make the plan. If TSHTF, they will probably be grateful for the plan. If your family has problems with you even making plans, you might want to do some soul searching about how your relationship functions.

-Kuovonne