Not hating it and not loving it. JRPG on rails is a pretty accurate description for it (might feel different for that talked about chapter 11, as I'm still on 6, but it probably won't make a huge difference for the overall impression).
I don't have a problem with the characters or story, but I'm just not having much fun going through the game. I actually went back to some SO4 grinding in the middle of it because it got boring.
I like both turn based and action battle systems, but FFXIII's isn't hitting a sweet spot.