Worked great, just as you describe.Can you explain useless? You never walked into a meeting, quickly mute. Go to a school, class, church, dinner, graduation, movie….literally anything that you need to mute your phone with literally no thought. That switch action, up/down could be done in any situation and you’d know immediately what was happening.
Except for alarms.
Which is fine if you work a 9 to 5 job. Not so fine if you work odd hours and your alarm goes off when the mute switch is ON. It's great (not) fumbling for your phone in the dark trying to turn alarms off in a crowded movie theater.
I've just taken to opening the clock app and shutting off my alarms every day - then turning them back on before bed. This is one of the biggest things I had to get used to, switching from Windows Mobile in 2009 to iOS.
Windows Mobile, you hit the mute switch, you actually got 100 percent silence and that included alarms.