Is it possible to blend ingredients from two very different styles of beer into one mixture and achieve a solid beer combination or will one style dominate. It seems that there are a few companys that mix beers to create a single beer rather than combine ingredients and create one. For example, I have heard that Firestone Walker blends two beer styles to produce the Pale 31, apparently Newcastle blends two different beers to make their brown ale. What is the advantage of not combining all of the ingredients at once?