I would agree
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The reason Brian seems to be the only one producing them is that he (actually his wife, who they are named after) discovered them and, as with so many things out of BHB, there was very little done to promote them so they basically just sat around in BHB. There are plenty of identical/near identical alleles that accomplish the same phenotype/combos so do not feel you need to hitch your wagon to that horse if there is a combo you liked, go ahead and grab one of the other alleles mentioned in this thread and you should be fine