[fjtorres]

And now, a suggestion to render it half-moot:
One of the options for the startup screen is "lastpage". What it does is automatically screen cap the last page you were on if you shut down inside a book. Then, when you power up, it pops it up, letting you regain your bearings while the device is booting, loading the reader app, and opening the book. It is the next best thing to instant-on and helps you dramatically extend battery life compared to putting the reader to sleep.
Check it out; a lot of folks like it.