A way of leaving your mark.......most breweries recognize the practice if is done in a tasteful way and usually has an area of some sort for that purpose....... it's amazing what you find at times such as breweries across the country represented.  A surprising example was a small brewery in Wilmington, Illinois having a brewery lable from the renown  Russian River Brewing in the Bay area of California and a small  brewery Brickside Brewing from Copper Harbor, Michigan posted at Solemn Oath Brewing in Naperville Illinois.  Brew hopheads get around.  By the way, a person pairing beer with food is a Cicerone (like sommelier is to wine....see my site is educational as well)