Hi yesdear! Gypsy is beautiful, regardless of what her lineage is! LOVE those black kitties!
As to your thinking Gypsy is a Bombay, or at least partly, I have to agree with the others...Bombay's are pretty rare. I can totally relate to your thinking, because of my Jules...I've heard people telling me everything from Bombay, Oriental Shorthair, generic Siamese, to Havana Brown.
Havana Brown is the only one that would make the most sense to me. He has the lightbulb shaped head, muscular body, uses his paws for EVERYTHING, is wonderful with strangers and everything new (so curious!), and of course that sable color (although mostly on his underside and front legs, and when you part his fur). The real selling point is that there's a local vet who breeds purebred cats (Maine Coons and previously Orientals) who says she sees Havana in him...
...but I know how rare they are, so I just have a hard time believing it. Of course it would be an incredible find to know for sure!
All in all, I just love my little pocket panther, and I don't care what his lineage is. He's a handsome, exotic looking, wonderful boy, and while he's got SOME oriental breed in there somewhere, I know how rare Havana Browns are. I just love him for who he is...and I know you love Gypsy the same way!
On a total side note, I noticed you're from Milwaukee. I'm originally from West Bend, your just-to-the-north-neighbor!