Gal: he has not been in the house; he lives in a fancy kitty condo (converted from a huge dog wire crate) right outside my back door, covered patio area, fenced yard - so he is protected from the elements and critters (fence is 6 plus feet).
I cannot warrant his safety if he were in the house - Trusty (APBT) is way too interested

.
As far as life in the condo is concerned - he is perfect at using the litter box, plays with his toys, and makes no effort to 'run for the hills' when I open the crate for feeding, cleaning, etc.
I just got him a kitty harness and leash today, and will see about training him on that (got any pointers, new one for me, LOL); if successful, we can do little outings in the backyard.