I went in once for suicidal ideation and they admitted me right away. I was close to attempting, and if I hadn't gone IP I would've gone home and either shot myself or taken enough meds to do the job. They knew I was serious so they transferred me to the psychiatric hospital in a neighboring town. It was a life-saver.

The place I was in didn't strip people down, but it was pretty strict as to what you could have. No phones or tablets, no iPods (although how anyone can hurt themselves or others with those fragile wires is beyond me), no drawstrings or shoelaces, not even snacks could be kept in the rooms. They were good about lots of other things though, and my stay was well worth the inconvenience. Even the food was plentiful and good, and we were allowed coffee until 11 AM. (Some places don't let patients have coffee at all.) That was four years ago, and I haven't had to go back since. But if I ever do, I'll go sooner rather than later.