ORIGINAL: quiksilver
The most utility, that I've been able to come up with - are for these special-regulation urban hunts. Where the hunters aren't "hunting" per se. Instead, they are "exterminating" an overpopulation of a particular game animaland doing so in tight quarters with housing developments, businesses and roadways. Rifles aren't an option there, given the nature of the surroundings.
Given asituation like that, I could see some real benefit to something like this. Just to avoid an ugly situation in somebody's yard or out in a public area.
In this situation, yes, I could see it being a real benefit. But, for where I hunt in a non-suburban area, I think it would take the challenge away.