We've got a new medic jump bag which I'll be bringing up to Petawawa next week for anybody interested to have a look at. It's designed to be carried 3 ways:
1. Stand-alone medical backpack.
2. Attached to the exterior of the CTS Small Pack via the daisy chain webbing.
3. Carried internally via the CTS Small Pack.
We based the design on the Camelbak BFM medbak insert, but have changed it into a stand-alone backpack. It's not going to work for everybody, but it does address some issues of size/overloading that have been discussed with the Blackhawk STOMP bag, as well as the issues of medics not having enough room to carry pers. items due to the mission specificness of most medical backpacks; when used with the smallpack, you still have room for your other stuff.