I am not aware of any research on hibiclens for this purpose.
The general statistic first is that about 50% of people ages 14-49 have HSV 1. Has been tested to know that he is not infected with HSV 1?
The transmission rate from women to men, having sex about twice per week, no outbreaks present, no condoms, no meds, is about 4% per year. Meds reduce it to 2%, condoms to about 1%.
Does that help?
Terri