Fluffies are ADORABLE and I happen to have the good fortune to have been "christened" as "Aunt Debbiemom" to a fluorescent orange one. <G> I have also fostered a couple, both of them melt in your mouth sugar sweet. Butters sounds like a perfect name for a fluffy.
Genetically, they are caused by autosomal recessives - that means two normal coated parents both have to be carrying a gene for fluff for there to be fluffies in a litter. IF bred, fluffies can only contribute fluffy genes for coat. They are not "rare" and a breeder promoting them as such or asking premium prices for one is a breeder to walk away from. It just a trait that is in the breed(s) and they happen.
Fluffies can have a variety of lengths and amount of undercoat they carry. Some have no undercoat to speak of and those actually shed less than normal coated corgis. They do have softer coats and are not the "wash and wear" coats called for in the standard <for you Michael

>. Now before someone brings up well Shelties and Rough Collies have long coats, their coats are harsh, weather resisitant, and protect them against the elements; not the case with fluffy corgis.
For fluffy owners there is a yahoo list devoted just to owners and fans of them called fluffycult. There is also a Fluffy Hall of Fame website
<http://bellsouthpwp2.net/c/h/chrisandheidi/Heidi/great_hall_of_fluff.htm>
Debbie
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