So the horizon you are talking about - does it automatically stay level or summat? I thought you meant the grid which is what I use as a reference when judging level?
Jonnyapple said "Or, better yet, just set the ON/OFF switch to display the info when you roll it to the "light bulb" icon. Am I remembering wrong when I think that both batteries show on the top LCD with the D90?"
Nice idea about the switch - how do you do that (I can't find it)? I think you are remembering wrong about the batteries on the top LCD. If you mean the basic battery symbol, there is only one and I prefer the percentage left in the battery and knowing whether I have the second battery full or if it has just started to be used. I didn't get a manual for the grip though so maybe I am missing something.
EDIT: Just found two basic battery symbols on the rear LCD so I'll use that as a compromise.
Thanks to all the ideas above, I am trying AF area mode as the top of 'my menu' with all of my other likes below it for faster access.
Nice one chaps.