I just ordered that a couple of days ago. As a big Herrmann fan (not to mention a big Laird Cregar, Linda Darnell, and George Sanders fan) I've been waiting for this release a long time!
I just watched this, and the score is indeed excellent and pretty much carries the film, which is full of plot holes. The 11 minute piano concerto that ends the film is fantastic. Cregar and Darnell (Arhh-OOOOH!) are excellent, Sanders kind of walks through it.