I'm not coming down on the position or anyone who spends time working it. The game is sick and if someone has the ability to catch fools from here he/she has a leg up. That being said, Jiu Jitsu is an art with a vast, almost infinite, array of techniques, many of which are low percentage, even for the elite. As a coach, I worry beginner and intermediate level grapplers gravitate toward techniques like this because they are exciting, and they may make the mistake of de-emphasizing the basics (e.g., simple sweep, closed guard attacks), which seem boring in comparison.
With that, I give you a wildly badass back attack off of the half guard by way of inversion (featuring Gabriel Rollo presented by Shoyoroll and Konde Koma BJJ, among others). Don't get too excited, and keep drilling the basics.