The Tactical Medical Solutions Uniformed Medical Kit (UMK) is purpose built to carry life saving medical gear without further cluttering a duty belt. The UMK uses hook material to mount to the front of a concealed body armor carrier. It is design to spread out its cargo over a large area so that it remain thin and low-profile. The front of the UMK is covered with loop material so that the adjustment straps of the body armor can be placed over it if necessary.
This looks like an elegantly simple solution for carrying trauma supplies on something that a patrol officer is already wearing. Check out the UMK at Tactical Medical Solutions.