i feel icloud syncs too much.
i use dropbox, in my dropbox folder i have subfolders that i keep everything i want shared. My whole folder for Univ work is in dropbox, so there is no dinking around, it all just gets saved in my BA folder, my finances for work are all in dropbox, so i can access them anywhere (no security issues, the finances are for a charity and as such they are all public anyways).
So I don't need to mess around with folders anymore than usual, same as if i used icloud, except icloud will save everything, which i cannot afford, plus, i use office, i like the simplicity of not having to export my files into a word document every time.
i only wish that powerpoint was as good as keynote, it is the one area where iworks outperforms office.