So, an update one day in. First of all, I am loving this custom AICP ROM. It gives you a lot more control over the UI, and eliminates some of the annoying things in stock Android.

Next thing, an interesting find: this AICP ROM has a display feature that enhances using this tablet as an ereader. If you go into the Android Display settings, and then select LiveDisplay, there's an option you can enable called Reading Mode. It flips the entire tablet into a grayscale mode where the purpose is reading. This does not hurt performance in any of my apps, but it does improve battery life, and when reading in the Kindle, Google Play, and FB Reader apps, the user experience is excellent. Even with this mode on, you can still enable 'night mode' which gives a slightly amber cast (also adjustable) to the screen. I find that flipping into this grayscale mode, and then adjusting both the brightness and the night mode settings, I can get a pretty nice display configured for lengthy reading sessions.

I've found that using this Reading Mode in Kindle, with the high res display on the Nexus, really makes for a clear reading experience that's easy on the eyes.