Unless I'm doing something wrong, it's really clunky to use.
I wish they would let you hold the tile and drag it over another tile and create folders that way.
Seems like a lot of work the way it's implemented now.
All the excitement about folders and not many people have used it to point this out.
Even with the Black update (I'm running it on a 925), it's still pretty clunky. You tap to open a folder, get a 'loading...' screen, then your list of apps pops up.
Much less streamlined than either iOS or Android, where you tap your folder, and the nested apps inside it are shown immediately. Kind of a minor disappointment, but at least I'm more organized!