Bill Porreca wrote an answer about La Sportiva Batura 2.0 GTX Mountaineering Boot - Men's on August 28, 2014
I asked a friend about this http://www.backcountry.com/profile/Wayne-Christoffersen/3954476 . I know La Sportiva has a narrow fit but, I have a fat foot and own the Vertical K. Wayne confirms that if you use a good orthotic with arch support even a wider foot might be able to comfortable in a boot manufacturer such as La Sportiva and keep the correct length. This is what I did with the Vertical K's. I have found with this particular company or any low volume boot that I am a size 10 where other boots or higher volume shoes I am a 9-9.5.