Nick Hunter
I have reached Yuki nirvana
LiSA+ShoWatanabe wannabe Nana Mizuki
A good comparison.
The ending was not unlike FJ songs, and the whole deal sounds like a mix between Nana Mizuki and GDM. As a result, a nice song by my standards, but significantly LESS than I expected. Still may end up in my playlist, though.
Needless to say, I'd prefer a Kalafina OP anytime. Even if Yuki was too busy for another Kalafina song, they could have always asked her permission to use Destination Unknown. Something tells me it'd have adorned the show a lot more.
EDIT: what channel is Fate/Zero airing on? I have a hope to catch it in live streaming if I'm lucky enough.