I was in one of these tournaments once. The prizes only came after the next scheduled patch containing a new hero. In my case, I got Viktor. So I think you'll need to wait for the Elise patch. Just my thoughts.
At this point, though, what I'm really concerned about is communication. If something was wrong with my tournament evidence, or if - as you're saying - there is another method of distribution other than what is stated in the FAQ, that's all well and good, but I would hope to be let known about it, particularly given that I'm reaching out to them.