Paul, Did you ever have used this system from the Arca Swiss? I use and am very happy, do not have the slightest problem with the citation of cables, you can build from that whatever you come up with. And like other products of this company, nothing is moving, the connections are solid. By the way, to any camera mounting plates are appropriate. Anyone who uses a product from under the mark knows what I say. So please do not say that something is better just because you use it yourself. It sounded almost like you had shares in this company. A colleague asked, and we provide information, he decides what is best for him...
maybe the arca is sweet, but i am giving my opinion after using dozens of plane (un-located) base plates and mounts for over twenty years- they all come loose. you cant rely on just one bit of rubber and one screw to hold a camera. im voicing my opinion about "plain" multi camera plates and mounts, i cant see that arca has done it different. even tightening up very hard doesn't make a difference, its been a major annoyance of mine fro a long time.
its inherent in the design- if you can rotate the base- even a little, the plate comes loose. the RRS dosent, and i use them on quite a few cameras. its logic, not "brand preference" , if theres a custom locating "shape" , the camera will be held properly.
it dosent need to be RRS, it could be kirk, or one of those custom L-plates on ebay, but i assure you they wont loosen because the camera is held. Even view factors cage works as it has two extra small screws that screw up and locate into holds the camera to stop rotating.
i do strap my cameras onto challenging places- sides of cars, ends of rigs, inside underwater housings, but the RRS has never caused and mounting issues, im sure the other brands of the same design will be the same.
as for brand loyalty, im allowed to sing the praises of one of the few pieces of equipment ive bought that does its job perfectly.
paul