I had Aeternum for about two days. The tweak itself works great, no crashes, no noticeable drain on battery life, worked smooth.
But it's missing a few features to make it usable. First, it needs folder support. I don't need my "Find My iPhone" app on the homescreen itself. It's not that important, it belongs in a folder.
Secondly, I hide a LOT of apps via Springtomize (Stocks, Tips, etc.) but Aeternum displays them all, leaving me with a bunch of apps clogging the Springboard that I'm never going to use, and this makes it harder to find the app you're looking for because there's more apps to have to look through.
Folders support, hiding icons, and Aternum is killer.