Since it's twin, there's no difference between the nose and tail. The flex pattern, insert packs and everything else are all centered. The heel side cut will still go on your heel.
Now if it was a directional asymm board, then yes, it would have to be built for goofys and regs. But since it's a twin, the only difference is your graphics will be "backwards". Whereas a symmetrical twin (or symmetrical twinish/directional twin/directional for that matter) you would flip the bindings, the asym twin you just mount the bindings exactly the same as a regular rider then flip the board around.
Since it's twin, it doesn't change anything.