Nova Launcher 1.0 is a normal launcher replacement, it can install alongside the stock launcher and should work on any ICS rom. However in order for the widgets-in-drawer feature to work it must be installed as a system app. Instructions below.

here is feature of Nova Launcher 1.0
Features include:
- Custom grid size (default 5×4 on the Galaxy Nexus)
- Scrollable Dock
- User setting for auto-rotate
- Resize any widget
- All/New/Downloaded categories in App Drawer
- Widgets-in-drawer (requires install as a system app) or from system picker
- Shortcut or resizable information in Widget Drawer
- Edit App Shortcut and Folder icons and labels (Supports ADW Icon Packs)
- Wallpaper scrolling options (Disabling scrolling improves performance of live wallpapers)
- Cube desktop effect
- Infinite scroll of desktop and dock
- Various other smaller tweaks/optimizations

get nova launcher 1.0 apk here