Well, the outcome wasn't so good...
As soon as my dad realized that the vocals were overdubbed he started questioning the integrity of the live performance ("was it all overdubbed?"). I ended up shutting it off because he was complaining so much I couldn't even enjoy it. I still haven't seen the whole thing yet.
The good news is my husband is starting to get into PoS now. He read the Wiki page about the Be concept and he said it's something he could really get into.
Oh, by the way, he bought me the Be DVD (with CD) and the Ending Themes DVD for my b-day. We watched the ET live concent footage last night and loved it!
Haven't stopped listening to PoS for weeks now. They keep sounding better and better.