Someone on kingsnake who has chocolates (can't remember if he said sable too) posted that he thought they might be a complex. I read that to mean different mutations of the same gene, like Lesser and Mojave. Don't know if anyone has crossed the lines and then bred the combo to know for sure.

I e-mailed in response to perhaps the same ad you saw for cheap sizable sable pairs to see if I could buy just a male to breed to my Garcia female but didn't hear back (and have since blown my mojave sale money on a double het pied albino male and a possible double het stripe albino male).