Hmm ... interesting. The guy that let me try his Crossbreed also owns a King Tuk. Must be something in the water.
The only reason I bought the King Tuk was because they had a model that holds a 'railed' 1911 and also has a cut out for a tactical/extended magazine release. That works better with a double stack 1911 than the standard CrossBreed holster that I also own. CrossBreed probably makes one in the same configuration but I was at Cabela's and saw the King Tuk, its proven to be a pretty good holster and it works with some of the wide body guns.