It looks great, and absolutely does qualify as a true fattie. You have your sausage rolled flat, you put stuff on it, you rolled your sausage back up, you wrapped it in bacon (optional, and prosciutto counts as bacon), and finally smoked to perfection. What more could anyone ask for?
Watching your build I was thinking you need more marinara between your cheese layers, but I see you have that covered for the next one.