This is what purrs on the floor beside my bed every night. It’s a Sig Sauer 2022 9mm with a Silcerco Osprey suppressor. It’s quiet enough to shoot outdoors without ear damage, though I have yet to try it at an indoor range without ear protection, because shooters in the adjoining booths are shooting unsuppressed and I certainly don’t need to do any more harm to my already shooting compromised ears.
I’ve found that either the Remington Golden Saber 147 grain, or the Winchester 147 SXT work best with my Osprey. Other 9mm 147 gainers, though they worked great without the suppressor, did not always cycle the slide with the suppressor installed. To have used them, I would have had to go to a lighter recoil spring. When you shoot with a suppressor, the recoil feels more like a .22, than a 9mm.
So, in conclusion, going through the red tape and expense of getting a suppressor certainly beats hearing loss. Most do have a plan to grab ear muffs, should the need arise, though good intentions may not always be convenient for quickly unfolding circumstances. If you ever have to fire a pistol indoors without hearing protection, the hearing aids you’ll need will be about two to three times the price of getting set up with a good suppressor.