Not much...most people over the age of about 12 can't hear that high, and if they say they do, they’re probably lying to you
If you have a Solaris 2020, based in my case and based on the pictures of Caleb on the campfire audio website, you want the body of the earpiece at close to a 45 degree angle with the cable exiting at a diagonal upward and forwards.
If you have an OG or SE Solaris, because it sits further out from your ear, different people have found different orientations more comfortable (some with the iem body more vertical and cable exiting forward, some with the iem body More horizontal and the cable exiting more vertically). For me, again the best position was diagonal, but others in conversations in this thread preferred the iem almost vertical with The cable exiting almost parallel to the ground.
Awe he's a bit of an earlet.