Samsung's "Multiview" for all android devices?

I recently read an article featuring the Galaxy Note's "Multiview" feature, which if you don't know, lets two apps be used at once. I found this really cool, finally a legit way to use multiple windows on android, even though it only allows (and has space for) two. Here is my question, is Samsung's "Multiview" software baked into TouchWiz? If I wanted Multiview on my HTC One X, would it be the same problem as wanting Sense 4 on a Samsung Galaxy Slll or Note 2? Does it use TouchWiz based frameworks like Sense's widgets use Sense framework? I really hope that it is somehow ported, because the Note is simply too large for me...and I don't have an upgrade haha.