@stuartv
Thanks for the reply, but I would like to ask you if you had a chance to compare the women's strap(shoulder) next to men's? I'm not doubting you, I just want to confirm.
I dive a Hydros, but I have not physically compared the men's and women's versions. What I know about the shapes comes from a discussion with the ScubaPro tech rep last February, when I took the ScubaPro regulator technician class. We talked briefly about the Hydros and the tech rep started talking about the investment SP had made just to bring the Hydros to market. He mentioned how they had created something like 8 different molds (which are each very expensive) just to make the different shoulder straps for the different sizes and the different shapes for men vs women.
So, I have no direct empirical evidence either way.