hi sbrown! I have oHSV1, which I just acquired about a month ago. My understanding (I'm not a medical person, and this is just form what I now recently gathered myself) is that once you have the antibodies, the risk is very low of acquiring it genitally. However, I believe this takes months, 4-6 if I remember correctly.
Once you have the antibodies I think it is pretty safe, though I'd think open sores would be the highest risks even w/ the antibodies.
I've also read genital to genital transmission is very low of hsv1, but there also aren't a lot of studies on it either.