[ Yet it was the second thing he thought of, once he figured out that she was not, in fact, wearing her underwear on the wrong side of her pants. ]

Is chafing a concern? Never had to protect the nethers myself, but I've always thought that metal pants would give the worst diaper rash. I'm not asking about you, by the way. I've got someone very specific in mind that 'constant butt rash due to stupid metal suit' would explain a lot about.

Also - you do not strike me as the sort of lady who needs a chastity belt to protect herself, unless you intend to use it to beat an attack over the head with it.