Why didn't I see this thread two years ago!
Amon Amarth could probably make it sound good, but would have to turn their hammers upside down to look like Crosses. They seemed to forget that there were Christian vikings...St. Olaf, Olaf Trygvasson, Harald Hardrada.
Then again, I don't like the idea of a metal liturgy. It just feels weird to me. Then again, much of Renaissance and Baroque church music would have been the popular styles of their day. Perhaps it is a change in focus. When Pretorius and Gabrielli wrote it was to glorify God and just so happened to also be entertaining. Not entertainment first and foremost.