The battle system carries the game definitely.
I played the import version, and even though I skipped nearly every cutscene, I still managed to enjoy the game. I looked forward to every fight in the game, even the regular enemies walking around the world map. I continued playing simply because of the fun boss battles down the road. The skits I looked up are absolutely hilarious as well, it's a good game to play through if you just wan to have a good time.
I can say win 100% honesty that you would look back fondly on Graces if you enjoy the battle system.
One thing I wish the US NB did more is release the game in its native state and include a booklet. In KR the game was in JP but it translate the entire game's story segments into Korean. Plus it did some extras and stuff. It really helps a lot and doesn't waste money. Too bad the US has strict rules...