It's certainly ugly enough to scare stuff to death.
Since it operates in roughly the same velocity range as high-end compounds and crossbows, and is anything but silent, I don't see a reason to forbid it on ethical grounds as "unsporting". Lots of people will be against it because it will bring a few more hunters into the woods during "their" season, but that's just human nature. Just like compounds, crossbows, and inline muzzleloaders, these won't ruin hunting, and might bring some more people into the fold. In large areas of the country, whitetail deer and now pigs are in serious need of control, and this is just another tool for that. With a few exceptions, game departments do a pretty good job of managing things, so I'll leave it up to them to figure out where this fits in.
I don't want one (but I might want a crossbow someday!).
