I would be worried about the leash thing to. Our bed sits up higher so I just put Winstin between us and that works. He has went to the edge of the bed a couple times and looks at me like no way, its to far down. This morning we got up at five, went potty and he snuggled back up against me and slept til 9:30.
I think Jason likes him sleeping with us because I have this thing that if I am not right up against Jason, I can not sleep. Since Winstin came home Jason has space to himself.

Winstin has all the cuddles I need.