Thanks for the reassurance kital, I felt I was being a bit harsh, but really felt it needed saying. This is an accident waiting to happen. Sometimes rescue homes are more worried about placing a dog than getting it the right home, and sadly, there can be no winners in this situation.
Even as an experienced dog owner/breeder/handler, I would not want to take on something like this, and as you say, there are plenty of deserving, suitable dogs out there just longing for a home. In the right hands, this dog might make a fantastic pet, but in inexperienced ones, its not only the dog but the people around it that may suffer.