I'm amused by all the "combat effective" claims of these various tools. Marketing for the tough guys among us, I guess.

Generally things that are designed exclusively to be weapons work tons better than things that can be used as some sort of weapon in a pinch. Generally you do better with a weapon you know how to fight with (i.e., skill acquired from prior training) than with something you get from the internet -- even if the Spetsnaz can take down a whole battalion with it. You don't have the Spetsnaz training for that tool. So I wonder how these people are able to make the pronouncement that the shovel makes for a good "melee weapon."