First for clearance. It would be a secondary that makes you able to carry the mini dispenser on your back. GIving yourself a small health, ammo and metal regen. And teammates the normal lvl 1 dispenser amount. When you pick it up it will be on your back and you are able to place it down by changing to your secondary and placing it

Positive
Able to keep the Dispenser on your back
While the dispenser is on your back;
+4 health regenerated per second on wearer (concheror/cozy camper)
Ammo regen while out of combat
+40 metal per 5 seconds (even if the dispenser is filled)
Nearby allies receive 10 health and 20% ammo per second (ally engineers only get metal from a standing dispenser)

Negative
Replaces the Dispenser with a Mini-Dispenser