Unless the batteries are different voltages, there is not much point in having separate lipo packs; they are not likely to become faulty and if they do, it probably means a lipo fire that will stop the match in any case. Extra links and extra wiring just creates complexity, more weight and more failure points. Its better to have one good quality Lipo, heavy wiring and a reliable link. As Einstein said, “Make things as simple as possible, but not simpler".