No doubt about it, Chris, it is refried 70s tech. BUT, they should hold up as well as they are made, and while they aren't a bug out shelter, I see them as a bug IN one.
Quake or storm, if your roof or walls are damamged, you are sleeping outside. This could be made and partially assembled, and you've got something a bit harder than a tent stored.
_________________________
-IronRaven
When a man dare not speak without malice for fear of giving insult, that is when truth starts to die. Truth is the truest freedom.