I did a search but did not find anything specifically on the new version SubGravity harness slider - SubGravity Backplate Harness Slider - Subgravity I am thinking about using it on my new Halcyon Carbon Fiber Backplate and would be interested in any experience with the SubGravity or any other brand. I have used the Halcyon Cinch system which works but was hoping for a less expensive option.