Where'd you go for the scan? It would be unusual for a radiologist to do the ultrasound at an imagine place...... Could it have been a male sonographer? Even if it was a radiologist, they spend years at medical school and 5 minutes learning ultrasound, so sonographers 'generally' have better practical skills. Not always of course, some radiologist specialise in imaging.
The genitals would be more developed and perhaps easier to see now but depending on baby position etc, it can still be tricky.

I'd be ****ed off if someone told me that my baby had traits of both?! WTF is that all about? He should have said, 'i can't tell' if he didn't know.

Any gall stones??? eta- no gall stones, thats a bonus.