Yeah, the key to using a juicer for your brew is to make sure you are careful in leaving excess out of your brew. Most people use juice from concentrate which is free of skins, peels, seeds, etc., A juicer can leave a lot of these elements in the juice which may mess with the process.
That said, fresh juice makes a great tasting wine or sparkling beverage. Harder fruits should probably be avoided simply because of the density of the finished product. It may be hard to separate the juice.