I read the ApexLauncher FAQ and there is this line:
Move the APK file to the /system/app directory manually. Make sure you set the file permission properly. Please reboot your device if the in-drawer widgets feature does not work. To uninstall, please remove ApexLauncher.apk from /system/app manually.
My question is, is it really that easy to do? I mean, if I move the .apk to the system directory, I will have a fully-functional ApexLauncher (i.e. a rooted phone) and when I delete the file, I will be back to the OK-state?