Being positive for HSV1 does not tell you where you have it (unless they took a culture). Most people have it orally. Some people have it genitally. An even smaller minority has both.
From what I have read — and it varies a bit — if you have had a long-standing infection with HSV1, it is difficult to get it again elsewhere on the body. So, if you have oral HSV1 and a new partner (who also has oral HSV1) gives you oral sex, the chances of catching HSV1 again is small (with a normal immune system). This statement is backed by HHH (a doctor on this site) as well as Terri Warren (an RN on this site —
http://www.medhelp.org/posts/Herpes/Chance-of-contracting-herpes-from-oral-sex/show/1091219).
So, you might ask how someone can have it in multiple places. Normally, that happens when someone first acquires the virus. Because the body is still developing antibodies, it is possible to touch an blister and spread it.
There are no absolutes in medical science, so the best things to do are be safe and get tested.