From that point on negotiations toward a more serious relationship will be in order. Aside from the fact that the Russian Blue will have gained considerable play time from you at your first meeting he will also have determined just how interested you are in getting to know him. Russians don't like change. They are a long-lived, hardy breed of cat. If they come to stay, they expect to stay a long time and be treated as a valued member of your family.
Russian Blues are clever and extremely agile.
I have had Russians that would sit on the tops of door frames. They love small spaces and can fit themselves into areas that you would not believe could make a cat feel comfortable. My first female discovered as a kitten that doorknobs open doors. When confronted with being either in or out of a room that was not to her liking she would simply jump on the doorknob, hold on until she turned the knob in the appropriate direction and found her way into the area she wanted. I know that every Russian Blue breeder can relate similar tales.