Nah, burning human flesh doesn't smell good. Not to mention the horrific screaming until the victim finally dies. And before that happens, they could run at you with flailing arms and engulf you in flames too. Too risky. A couple of fully automatic weapons would be better IMO. Longer range too. Or maybe a garden tiller type contraption to make human-hamburger...
I need one of these, my wheelchair always gets caught up in the undergrowth and brush when i go in the woods, with that one i could burn a pathway and get where i going much faster!, could cause a forest fire though. Also good for dogs that like to piss on my tires. Also good for grilling steaks on the go, lighting cigarettes, instant tans, camp fire, somores, book burns, overgrown grass, and a few other things!.