I have 2 Dumeril's and love them both. Very docile and never even looked like they want to strike.
My adult female was a little huffy and kinds hissing when I first got her. But once I picked her up she was puppy dog tame. But after a few weeks she has lost the cage aggression and never hisses - just a little tensing and once you have her she's calm. She eats pretty good. But has gone off eating for a month or 2 here and there.
My year + old male is awesome. Never misses a meal. Never hissed or struck. I had him since he was about 16inches and he's now about 2.5ft. Such a little sweetie.
Both snakes are much more docile than my BP that can get cage aggressive and nips at me now and then - expecially during shed. But is a puppy in your hands.