OK, first I'm not stalking your threads, I swear! And now that we got that out of the way...
I gave UC a try for about 60 hours with one character, and then tried semi-successfully to use it with Combat Remastered for another character. My take-away was that it does some nice tweaks to vanilla combat such as the new animations (that NPCs actually use), but it isn't really an overhaul to the extent that Deadly Combat or Combat Remastered are, let alone something like Duke's.
Many mods that make claims about enemy AI don't really do much other than tweak a few variables, and there's only so much that that can accomplish. I felt UC was more about a few good tweaks to enhance vanilla combat (use of stamina, amplified damage, new moves), but it didn't do the comprehensive work that I like to see from the full-blown overhauls. It might be nice to use with Deadly Combat, if they don't stomp over each other, though.