Those Industry 9's are loud!
I've come full circle with my hubs. When mtb'ing it was nice to have my Chris Kings alert the rider in front of me to let me pass without having to ask. A bell helps too.
I now have Onyx hubs. They are SILENT and Instant engagement using a Sprag Clutch. It's is hard jumping on my other bikes w/o Onyx. The slop in the drivetrain is very annoying. Now if they can't her my 4" tires rolling up on them, or they're on Industry 9's, it's my bell.