Its possible but down to the cat really, which is not so helpful i guess. I have one cat who was born outdoors and lived outside until he came to us at 12 weeks, he won't stay inside other than to sleep. We were meant to keep him in after a (minor) operation but he managed to push a hole in the door, such is his refusal. My other cat refuses to go outside although she did so before coming to us. I guess if they get used to it early enough it could work but theres no guarantee you wont find it pining at the window, which would probably make you feel really mean