One other thing/issue to note, is that if you use an Arca designed Arca foot (like on a tech camera rm3di) or any Arca made similar product, the lever clamp from RRS will not lock tightly on the Arca designed foot. There is no way to adjust the tension on the RRS lever style clamp that I know of either. This only holds true for Arca products using Arca's own Arca mount. It has always amazed me that RRS and Arca have slightly different widths to their "Arca" feet. Thus on my Cube, I use the traditional thumb screw style release, not as fast but will tighten securely so no movement/sliding etc. is allowed with Arca made feet.
Paul