I don't know the answer, but guessing, I would say, as I think they are the same family, or at least very similar, probably best to position them somewhere else.
To prevent blight I fear is almost impossible! I will be using bordeaux mixture on my toms to try and slow the pace, plus I shall be growing them under a plastic roof which should stop rainwater falling onto the plants as much, which should prevent humidity around the plants, which should slow the race. Also I am planning to remove a few leaves as the tom plants grow, to help air circulation. Other than that, I just don't know. I do have a tomato back up though, my greenhouse will be packed to the rooftop with toms of all shapes and sizes and I use different tools at home to try and prevent bringing blight back home with me!
