If you want your ctrl+tab previews in Flip3D style, try FoxTab. It's fun to play with. Whether you can be 'productive' with it, is something else. Up to you.
One caveat: It needs Flash in order to work.
Another caveat (may not apply to you): One of my other addons, called Toolbar Buttons, stopped working, until I uninstalled FoxTab... it wasn't enough to just disable the addon.
The thing to do here, if you think it's worth it, is to use multiple FF profiles, one with FoxTabs around, one without.