That's what I did to pass the time until release here in the states. I like to think all that practice on Dawn and Portrait prepared me well for the difficult OoE. It's harder than Dawn or Portrait, and there arn't as many weapons etc. But it is of good length, good replayability, one unlockable character, and a damned good story with a twist.
You'll enjoy it. Get back to me when you do get your hands on it!