I know when I'm making PAs, I do have to read from the PA Book. Just like the conversation that was over heard above, I start thinking about something and before I know it, I have no idea what I'm talking about over the inter-phone.
I find it much easier to read from the PA Book. They slightly change the wording from time to time, so I always want to make sure I get the right info passed out. I do make my own changes to better phrase something...I mean come on, how many times do we need to say the word "mask" during the O2 demo?
I have been told (I don't believe it) that I make very good PAs. Maybe it's because I read it?