I have 2 with black pastel. My female black pastel calico had a long nose and a almost dimpled snout between her nostrils, no whistle. As she has aged her face has smoothed out and looks nice.

As for my onxy boy, his face was and is still a bit of a mess. He has the long face with a pinched duckbill. His lower jaw doesnt always sit right and even, but may have something to do with wide open mouth striking at the glass when Im near. I remember a whistle the first two weeks or so I had him. Doesnt whistle now at all.

I agree that making super blacks and cinnys are a bad idea if you have less than perfect snakes. I am sure that my two above may make for some heartache at hatch time. I will probably not ever breed these guys. He is better mixed with strong genes