I use suppressed .22's, a Ruger 22/45 AAC Phoenix Mk2, and I use a AWC optima on my 10/22 with the 16" Tactical Solutions threaded barrel.
My dad has a 22/45 Gemtech oasis.
the Phoenix suppressor uses a preforated barrel, so that no matter what you feed it, it will come out subsonic. Dad's Oasis will produce a sonic crack with high velocity .22LR, as will the optima out on the end of the 10/22 as these do nothing to the velocity of the bullet, they simply suppress the noise produced by the propellant gasses.
You will not suffer any damage using High Velocity out of your P22 and SBR,
you will simply hear the bullet break the sound barrier as it comes out into open air.
I normally use CCI standard velocity in my 10/22 with AWC optima muzzle can
and don't get sonic crack, it also works in my dad's Oasis quite well.
(I use it in my Phoenix as well) there is only approx 20fps difference between CCI's subsonic 40gr @ 1050fps and CCI standard velocity 40gr @ 1070 as stated on the front of the boxes.
One nice byproduct of the Standard velocity is the shot to shot consistancy
in velocity when tested over a chrony, and consequently is a accurate and consistant round (my 10/22 can keep 10 of them in a group the size of a quarter at 50yds fired from a harris bi-pod and rear beanbag)
High velocity .22 tends to vary in velocity, shot to shot a wee bit more, and that is a variable that effects accuracy.
Modern suppressors do not have things in them that wear out under normal circumstances...they are a tube with metal baffles, whether the baffles are made of aluminum, as typical with some .22 suppressor to stainless steel to exotic titanium alloys on centerfire weapon models.(there are some .22 suppressors that do use a polymer baffle, but most are aluminum)
They do have to be cleaned, and the current vogue for sealed units that cannot be disassembled by the owner, means soaking in Kroil/WD40/ect
(ask the manufacturer what they recommend) then blowing out with a air hose. This will make it last a long time under normal use, and if it ever gets
too clogged up despite cleaning, you can send it back for factory service with minimal fuss.
The Optima I have is a design that can be taken apart, and its stainless baffles can be soaked/scrubbed/ or even glass bead blasted at a machine shop to get any buildup off of them.
Unless you get a baffle strike....a bullet hitting the insides of the suppressor
due in most cases to the suppressor being misaligned with the bore, these things will last forever.
old designs used rubber shoot through "wipes" that was only good for about 25 shots before replacement, screen wire rolls, steel wool etc that had to be replaced quite regularly...all headaches we don't have to contend with unless shooting an antique.
Have fun!