I finally pulled the trigger to get this for my shooting needs. Admittedly, I hesitated to invest in this despite having known the advantages for years. It takes the weight off my shoulders and allows a nearly hand-free navigation of my rig.
I have a BMPCC6K Pro with a Canon 24-105 on a decent shoulder rig, and I shoot a lot of things that require a lot of dynamics. So, I've set up a wireless follow-focus trigger on my left finger while I "pull" zoom on my right hand with a manual focus wheel. The result is an ENG-style gathering with a cinema camera that works incredibly well for what I do. This vest is not just for one type of shooting; it's versatile and can adapt to different shooting styles.
This FLYCAM takes all the weight and allows it to float above me so I can focus on pulling both my focus ring and zoom.
If you're a single-shooter, this starter vest is well worth the investment, especially considering that others are double or even triple the price.