kusko_andy - I actually asked about this very issue in the early stages of reporting on this...  and the point was made to me in return that, with respect to the drunk hook-up scenario you describe, there needs to be an accusation of assault for an encounter to be investigated / thought of as a sexual assault. So if two people agree to have drinks, agree to "hook up" and all is well, it's probably not going to be considered a sexual assault. I think one could argue this is still a risky "grey area" -- if an intoxicated person doesn't really know if their sexual partner is okay with what's going on, or if their partner is too intoxicated to give consent, the person risks being accused of a crime, risks committing a crime, or could even end up victimized themselves.