Hoongadoonga,

No, you do not have to use my cloud mod to get most of the benefits of using the latest version of the ME. The weather manager will work with either the stock WOFF clouds or the clouds in my cloud mod, your choice. Of course, you get a much greater variety of wind and cloud conditions by using the cloud mod, but it is not required in order to use all the other great features of the ME.

Of course, you can always try my cloud mod and uninstall it if it is not to your liking.