Save your back!
I've been using this thing lately on my ENG/EFP type shoots and I really like it.
There's a bit of learning curve but once you get the hang of it, it feels pretty natural and other than helping to relieve back and shoulder strain, it's also great for getting low angles. Check out the demo video courtesy of Johan, the inventor.
This is how I used to roll.
HDX900 with the Leader, Litepanel, wireless video, and often a matte box. This for 10-14 hours a day on the shoulder, 5 times a week, for about 6 months. I didn't have back problems so I didn't worry about it. Until one morning I woke up and couldn't get out of bed. Maybe some people can shoulder that kind of weight, especially you Panavision operators, but I'm an out of shape weakling and that HDX setup wreaked havoc on my poor back.
So now I use the Easy Rig so that I can continue to work in this business. Also working on that core strength! Chiropractor said it would help.