This work or not? Cold Heat Tool

I've had professional solder training as well. But I have another thought on possible uses of this product. Having been away from civilization many times with just a handfull of Jeeps, something like this tool may come in handy some day. Granted, I've never tried this tool. But cold solder joint or not... if it works enough to get my Jeep off the trail, it is worth the $20. The cold joint can always be redone correctly when I get home. A regular soldering iron can be a pain in cases like this because it takes a while to get hot, and a while to cool down. Realistically, a butane iron probably works better than this "cold heat" thing. And I will continue wheelin' with the butane in my tool bag.