Very cool. I did the same thing back in April or so but I haven't tested any of them yet. It's good to know though that I can expect them to work. When I was sealing them I packaged them in a variety of quantities from an entire package down to 3, 2 or even 1 cube sizes. Just as a test I also double and triple sealed a few of them. A single cube (triple sealed) rides in my Maxpedition 12 x 5 bottle bag survival kit.
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“I'd rather have questions that cannot be answered than answers that can't be questioned.” —Richard Feynman