Sadly, I think these shorts might actually make a rape case be less successful, because studies show that the more restrictive a victim's clothing, the less likely the police, judge and jury are to believe that she was raped. There's been cases in the last few years where the rapists has got off because the judge, etc., didn't believe women could be raped if they were wearing Spanx, skinny jeans, and so on. In other words, if the rape seems 'difficult', then the victim must have helped remove her clothing, or just laid there whilst he removed them, and that somehow means it was consensual. Obviously, all rapists give up the second a woman says no, or he can't gain immediate, easy access to her genitals
I bet having shorts over pants and under a skirt would count as being 'difficult to access'.
In other words, females are damned if they do, damned if they don't. You wear something remotely sexy/pretty/skimpy/girly and you're asking for it, and if you wear something unsexy and/or difficult to remove, then you must have wanted sex, and helped the man, etc., etc. If you appear available, it's your fault, if you appear unavailable, it's your fault.

All of this is irrelvant to the fact that rape is 100% caused by rapists, 100% of the time, of course. And that some MEN need to change their opinions, attitudes, beliefs and behaviour, not women.
And chinamoon, rape is about power and control, not sexual attraction. Whether or not a woman appears attractive does not enter into the rape equation. Otherwise, how come rape is still endemic in Afghanistan, where they have the most extreme body covering of women in the world? Or that women in her 90s was raped the other week? How come rape of female patients is a big issue in psychiatric wards (often the staff, so can't be blamed on MH)? How come women in comas get raped? And so much more.