99% of the details I have seen for vertical x-bracing shows one member continuous. I design a lot of connections for a steel fabricator and I am always required to perform a hand calc or 2 ram connection calcs with one being the horizontal X-brace connection to check the gusset plate accurately. If this would be allowed for vertical x-bracing, it would be more efficient. Another option would be to have the horizontal bracing options match the vertical bracing options.