The air version I can maybe see using if I'm surrounded, but what is the use of the grounded? it's slow and builds very little AP, I've been able to find a use for almost every other move he has except this one
I'm not a Sweet Tooth player, so I'm not sure if this would work, but how about this. I know his skillset and I think this could be chained together, but maybe not.
Forward square(shoulder,) down square(stomp,) up square(uppercut,) up triangle/forward o(machete or napalm,) standing triangle(chainsaw.)
Could this be worked together to pull off a combo? I'd assume it'd be up there when it comes to AP accrual if it fits together.