I'm still waiting for the E-scope. You can't use a regular stethoscope with in the ear aids. It has headphones instead of earpieces.
I really don't like having to constantly take them out/put them back in. Sometimes this happens in front of families when I need to take an urgent listen when responding to an alarm, etc. No one has said anything yet. At this point I use a cardiology stethoscope - it's great.
I just don't like endangering that expensive technology with the in and out thing as well.
Your employer is supposed to make reasonable accomodations for you - like the stethoscope, earpiece for phone, etc. Get with your NM or Employee Health for what you need to do for your accomodations under the ADA.