This exercise is not for beginners. It's one of those exercises that you want to do when you have exhausted your biceps "playbook" of exercises.
You may see some of the older and more experienced lifters at the gym improvising at the gym from time to time. Some people think such guys are just trying to show off. However, most of them are simply trying to keep their body and muscles from getting too adapted to specific movements/exercises. We all know that once your body adapts, and it does so quickly, that's the moment growth stops.
Thus, this exercise may very well have been born out of the need to change things up and innovate. We suggest doing this exercise from time to time just to "confuse" your muscles and prevent them from reaching a growth plateau.