Same for me - has worked for a few years now. The only hitch is when I allow someone else to use the phone and they just put it down after use expecting the screen to lock automatically, which it won't...
I often find myself leaving my phone unlocked on the table while I do something else, knowing that locking it risks the app I'm using discarding my state so it can show me more Content despite me having more than adequate RAM. I don't have it set to Never, but it is longer than default to accommodate this.
