I love my ultrascope. Been using one for close to 6 years. You can hear through a shirt or two, not anything reallu thicker than a sweatshirt. Works amazing and i retired my cardio 3 littmann in favor of using the ultrascope
I bring a back pack with my clip board, stethoscope, a extra cheap trauma shears, lightweight jacket, cold meds, Tylenol, a few extra pens and pen light. Get in the routine of puling your stethoscope out of your bag on every call and put it back in afterwards.