If this is a "branch" of SDI, is it safe to say it uses coax cable as well?
Putting on my double-sided "Installer" and "System Designer" cap, reliance on coax cabling is, IMO, one of SDI's main drawbacks: it's fine (in concept, if not necessarily operation) for retrofitting on existing infrastructure, but for a new installation or even an upgrade where I'm adding more cameras, a need to pull in more coax is far from attractive - it's an expensive, bulky, heavy, hard-to-work-with, single-purpose cable that won't be any good for anything other than supported camera transports... and I still need to run a separate power feed, which makes large bundles even more troublesome.
At least with 960H analog, I could presumably use baluns with Cat5e or Cat6, which is cheap, plentiful, easy to pull in large bundles, lets me run signal and power over a single run, and useful for all manner of other things (including VGA or HDMI to a remote monitor).
Of course, for me, the point-to-point infrastructure is a major drawback to all these systems as well. Analog gives me at least SOME ability to run multilpe signals on a single multi-pair cable, while IP's ability to "consolidate" bi-directional communications of all sorts (not just cameras) over a single transport has saved me major design headaches in some recent jobs.