This is pretty cool. But, I don't like the "it feels right" kind of language they are pushing in their marketing. Ultimately, it may be a nice tool, but if it isn't approached in faith, it does nobody any ultimate good. Also, the commentaries are from a non-Catholic view and will be deficient in some areas.
With all of those catches, and with a few I didn't mention, it is still pretty cool. The tools, maps, multimedia aspects, ease, etc. are all very nice.