Sam2 -“Health: I don’t think so. I think everyone agrees that not Derech Chibah is Muttar Lechatchilah (see Kesuvos 17a). The only issue is whether not Derech Chibah can actually exist in a practicaly, everyday situation.”
Well then, if I’m not right explain to me why they hold Assur.
I posted above, I don’t even agree with Rav Shacter that by a pretty woman that it’s Assur. I hold handshaking for business purposes is Not Derech Chiba, period -no exceptions. What I hold is Assur is some people shaking e/o’s hands after Shul on Shabbos, whether they are the same or different genders.