That's not a Pharoah or Ibizan mix. I don't know what it IS, but I can tell you that it's not a pharoah mix.
A lot of dogs on Petfinder are labeled Pharoah hound solely because they have erect ears. Pharoahs and Ibizans are extremely rare in this country (the AKC registered 109 Pharoahs in 2005), so I find it pretty hard to believe that they're all running loose, mating with whomever they want.
I've met a couple pharoahs and ibizans in a boarding kennel type situation. The ones I've met have had pretty much the typical sighthound temperament (friendly with their family, needy and clingy, intelligent, prey-driven), but have been quiet and reserved with strangers.
They're definitely one of my favorite breeds!