The need for clever relief and support solutions for longer gimbalshots with heavier camera setups is certainly present. See in this context also our 
Canon EOS C200 and Ronin-S test.
The Kickstarter project "GinbalGun" now tries to remedy this with an aluminium construction that is carried over the shoulder with a loop and to which various accessories can be attached in addition to the gimbal. In the presentation video you can find setup and carrying options:
Whether the distribution of the gimbal/camera load at the top of the GimbalGun makes sense, first user reviews should show. The Kickstarter Kampgane has not started yet. If you want to get more detailed information about the GimbalGun, you will also find some testfootage here:
