The one we have here is fine with other dogs if she's working, but she can't be penned up or boxed with another dog. She's all hunt too.
My first two littermate males were the same way, they were fine with any dogs in the woods but Lord help us if one got out at the house, they don't fight to fight, they fight to kill. They have a crazy high prey drive and are very very high energy dogs, I personally loved my first two but they required alot more tending to around the house than my currs.