you could tell some of the actors were amused by what they were doing. I like the grapple hook part.
It actually did seem quite useful if thats all you had to use. And who would think to suspect a shovel if they found it in your car. not quite the same response as a machete for sure...
The grapple hook part...FUNNY! They all showed guys beginning to toss these shovels up toward a tree/wall/whatever, then immediately cut to a close up of the shovel perfectly hooked on the tree/wall/whatever. I couldn't help but laugh at the 70s-kung-****-movie editing of the grapple hook demos. Awesome!