I watched the first episode subbed the day it came out. It was very good, but it was a bit difficult to follow after watching the first FMA series and then trying to basically watch it at the beginning again, only this time it's completely different. @3@;;
Surprisingly enough, not many people I know knew about it.
Oh, and one question; I know I haven't read very much of the manga, but I could've sworn that volume one starts out in the same place the first anime started out in. You know, the place with the priest in that small, desert-like town. Am I mistaken?