I think if used as a fn on someone with no Hispanic heritage, it might seem a little odd, but he'd always have a nice story to tell people on how he got his name. :) I'd still say it might be best as a mn. Either way, I
LOVE saying it. Hor-Hay. The breathier the better. :b
On a side note, the actor
Joaquin Phoenix was named after a family friend, I believe, and their family has no Hispanic heritage I'm aware of.
He's been able to pull it off quite well. :)