iCloud coding isn't trivial and I have spent many hours re-writing how data is updated in Gun Log +P so that it isn't to "chatty" with Core Data and iCloud services.
I personally prefer to use iTunes and backup my database and copy it to other devices because there is no chance of being out of synch. Any synch technology can get into a state where the data is not the same on every device or instance. That is the nature of the beast.
Here are some screen shots showing the final colors and layouts for a few areas in Gun Log +P.