My father had the idea to let the cats out of the guest room when I'm gone to let them get acquainted with the house (and the mice). I normally leave the dogs outside when I'm gone, so it's a reasonable thing to do, and they can stay separated for while longer.
Pancho is the more exploratory of the two cats. He made it all the way to the other end of the house before Sparky even got downstairs.
And met Maggie - again.
I can tell already that Pancho isn't going to take any guff from no dogs. When we left the house, he was sitting in this room watching Maggie throw herself against the door.