Hotted was testing rogue lvl 100 talents just now on twitch.tv, and it seems like the animation for DfA was updated a bit, difficult to see the difference, but I had to laugh every time he used it. He was using an undead male. His character looked like the ragdoll effects from a modded skyrim, just did a massive swirl up into the air and smashed down.
Also, if you read the tooltip carefully, it says 15 yards, so he could basically run away from a mob, jump high in the air, and "teleport" down on the mobs. I suppose this can be used as a small gapcloser, just like you suggested Murdeh.
As long as the aoe at the start doesn't break CC(and if they up the range to 20y), and you can't be CC'ed mid-air(like a warrior being stunned mid-charge still finishes the charge-ability), this could be a very viable PvP talent. Also, maybe the animation has to be tuned down a bit, really ragdoll-effect. Looked funny though, and hit pretty hard(8000 crit). Starting to get my hopes up for this talent at least.
Worth keeping in mind that he didn't get the evicerate at the end(it seemed,and this could also be the case with the video shown in this thread), and had to actually click the evicerate button when he landed. Seems to be a bit buggy at the moment; let's hope it isn't at launch.