I didn't like the arm position when I first started seeing it, search and you'll find my posts in regards to such. However, having now had quite awhile to play with it, it is better for in close stuff, much easier to track and move with. I'd tried a variety of positions including my 45 degree offset forward vert grip, which works far better than a standard vert grip, much more stable and more natural to grip with. However it, like all vert grips, can get in the way. Extending the arm this way, is very similar to the thumbs forward/high grip in pistol shooting.