UM, NO WAY!!!!
I agree with the "Free Balling" method, I don't need anything under my wetsuit. If I was going to wear something those would be the last thing you would catch me in. I am sure most men (at least the ones that like women) would not be caught dead in those.
Now my question, would you really want your man wearing something like that? You might as well have him wear your chonies, they look like girly undies anyway. I bet if I pulled off my wetsuit and had that on underneath, the rude comments would fly, right after I was tossed in the drink with the chum.