KEVTHEMED

The problem i found was that as HEMCON is designed to adhere to blood it also sticks to anything wet or even damp. The application of the dressing takes some practice to get right.
Ive wasted a couple of the big dressings trying to hold the packet as directed, line up the dressing with casualty and get it on target first go.
It is the dogs dangly bits but make sure you have a few goes with the training dressing first.

On the IV Point you raised. In studies by the US (again!) it was shown that a percentage of combat casualties had a IV set up by the medic when it was not really necessary. The studies showed that the IV was given before effective haemorrage control was established.
Also it was noted that IV therapy was started in casualties for conditions that didnt really warrant it.
US medics on the CLS course now cannulate a casualty but dont necessarily start running fluids.
Exceptions are usually GSW, Explosive trauma and or burns.