I'm enjoying it thus far, which surprises me. But I am a huge Yuki Kajiura fangirl and I adore Kalafina! And the soundtrack is awesome so far, I love her fast-paced battle chorals as usual.
The visuals are SHAFT amazing as usual, though I can't say I'm very fond of the mangaka's character designs. They're too square...Then again, I wonder if a more mainstream style would take some charm from it.