Yeah, absolutely feel free to ask around. After having listened to the full Japanese track a few times, and seeing how they replaced big chunks of it with English audio for the Blu-ray, I’m very curious about what was in it that was so objectionable.
EDIT: Oh, and I think it still qualifies as a pretty shameless double-dip. I wouldn’t re-buy just for listening to the lossless audio–only for working with it. I think there’s some other pretty minor differences too, none worth it IMO.