I got the packets today, and I am doing some stress testing on a few of them. I am freezing one, I tried squeezing it in different directions etc.. and they do not leak. They are not puncture resistant in any way. The package is tear resistant and difficult to open.

I drank the contents of one and amazingly there was zero flavoring not a trace of plastic etc..

they will be part of my emergency kit which will include 6 liters of water, 2 3600 units of mainstay rations. I have the confidence that they will do fine inside a kit.