Hemostatic agents have their place. I come at this as a firearms instructor and thinking about accidental gunshot wounds, but I've thought about it for wilderness use too. If you're by yourself or far from definitive care with a big bleed, a hemostatic agent can make things a lot easier for you.

Combat Gauze and similar products are more flexible (work in more situations) than the Quik Clot sponge products. They're also less bulky to carry.