This style system is great for full blown milsims thats for sure. We have developed a similar system here locally involving the medics carrying around medic bags containing:
Tape, simulated IV system, casualty cards, ear plugs, simulated bandages.
The card system works good in that random draw = wound. It's a mix of more involved ones such as "Chest wound, apply IV for 5 minutes" or a simple "Shrapnel to right leg, bandage up"
That said though you need to make sure that the system is used in the right context. We avoid advanced medic rules for simple skirmish days but milsims it's required kit.
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