the only people who could answer that would be the origional breeders of those specific animals. but the most likely answer would be "no". the parents of those animals could be producing animals that all appear to be the same but when the f2 babies are bred back to each other they could produce the same or completely differant. that is the one thing about hybrids is that it is a guessing game as well as a waiting game. you dont know what youll get until you breed many times over and breed babies back together ect ect.....
its hard to get stability in pattern with hybrids it has been done. being that both siblings looked similiar the chances are better at producing similiar babies, but more than likely differant but also possibly better. i say go get em and breed em
adam
here are 2 sinacorns and you can see the differance in pattern as well as color


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hybrid breeders association
1.0 snow corns
1.0 albino corns
1.1 sinacorns
1.0 striped ghost corns
1.1 kenyan sand boas
1.1 mbk
1.3 ghost corns
0.1 bloodred
0.1 striped albino corn
0.1 childrens python
0.1 albino nelsons
0.1 anery motley
0.1 albino banded cal king
0.1 normal corn het hypo,anery
1.0 jurassic milk
1.0 blizzard leo gecko
0.2 normal leo geckos
1.0 3 lined mud turtle