Nice, quirkiness, I like. Reminds me of Mr.Bungle somewhat, not quite as crazy though. See the song starts with a nice drive, whack whack whack, so I got really into it, also the way you sing (rhythm and tone) works really well. The growl, as you noted, is too, what to say, liquid maybe? I also think that it's not a matter of post processing but it's the way you sing it that should be changed. Then it goes into this 'poppy' part where your drum loses its drive, it's like the song loses altitude you know the way you feel sometimes in a plane when it takes a sudden dip? In the 'punky' bit there's a guitar that's too flimsy. It sounds like it could be really cool but it's somewhere in the back. Then whack whack whack, yay! The ending, to my taste, is abrupt and your voice sounds disinterested on the last 'aaarr'.
But, again, this is solid stuff.