The "style" of writing from the players' book will carry over to the referee's. It will not be an exhaustive tome trying to cover or create answers for everything. Instead it will provide the basics and outlines for doing things or how to do them with a simple "nudge you out of the nest little bird" spirit. Experienced gamers will no doubt have their own ways of doing things anyway which will be perfect as they know how and what to do already. For a new player, this will be (I hope) a good starter experience.
While the referee book will be larger, it will be due to additional spells and creatures as well as magic items. So more reference material for you to use, but again not and an exhaustive tome. I hope to keep it to 36-38 pages.
Anyway thanks for giving the game a go, and your comments, good or ill, are welcome.