I will be trying it also, if it keeps you warm and toasty in Alaska must pretty good for anywhere else in an emergency. The two space blankets can basically fit in your pocket so its nothing to carry really.I've done this before but the coal bed method where you bury the coals. It does work pretty good if you get the right depth. I'll have to try this method next when I get the chance
Camping out like this is so awesome.