Apex and Nova both have a function to hide apps. The default settings are basically the same as the stock launcher so I don't really see any reason not to use one of them. Some people think they are not as smooth as the stock launcher though.
Also you should just be able to copy trebuchet from cm to the system/app folder and set permissions if you trebuchet.
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I love Nova launcher.. So far this rom loves it too!! Can't wait to dive into the settings of this thing!! See what's under her skirt!