"Cuddle snake" and "Lap snake" are not exactly terms that I would use to describe a Dumerils Boa. While they are pretty calm and tolerate handling well, they are like most boas, curious and exploratory, and they can be pretty persistant about where they want to go. Even when they are still small, in the 3-4 feet range, they possess far more strength than a comparably sized BP. I'm not trying to discourage you from getting one, because they are great snakes to work with, but don't go into it with different expectations. My personal precaution is to not put any of my snakes around my neck.
Here is a link to a thread from one of the other members, where she posted some photos of her with her adult female Dumerils.
http://ball-pythons.net/forums/showt...dult-Dumeril-s