From what I've been told, cause I also have my eye on a bataleon and was having the same directional vs twin dilema that you are, you wont really notice a 15mm setback like the violenza has. It will be perfectly fine for all park riding but make freeriding a little easier. The Distortia is the other option, but its a pretty soft board. But it is a true twin.
P.S. is that you in your profile pic, if so, what your setup?
That thing I do to escape the world and have fun with my friend