I've played around 10 hours now and can confirm the game is definitely very good.
The story is captivating enough to make you want know what will happen next. You basically alternate between two time-lines created from one important decision you make at the beginning of the game. It's interesting to see how events happen drastically differently between the two. My only reserve is that the two time-lines sometimes influence each other when they should not.
As for the battle system, it's really fun. There are lots of skills that make it more and more engaging as you gain level, like aoe, traps and limits of a sort.
There is also a strong focus on gaining ability to open new paths or discover treasures in areas you already visited, like an action-adventure game a la Zelda.
J-Gaf seems to be more interested in Tactics Ogre and Golden Sun but I can safely recommend this one. Sales are desperately low but I really hope word of mouth will give it the legs it deserve, as reviews are pretty positive.