Agents such as Celox, QuikClot have a niche role in the field. They augment basic techniques and methods--BUT they do not replace them. In fact, there are some notable precautions. Specific training is highly recommended for any of these measures. There are private organizations out there that conduct classes on field use.
I'm trying to type this from memory...
Gauze is preferred because it is much more easily controlled during application. Granules/granule dust can get displaced or blow to bad places (eyes, chest cavity, etc.). Gauze packs faster, is easier to control and is a seamless integration with the techniques we're already familiar with.
Do not apply to chest wounds. Be careful around the abdominal cavity as this stuff can do some damage (albeit they're a lot safer than they used to be. High temps/burns/tissue damage associated with earlier products). Use on severe wounds--not on every wound "just in case". There may be hospital complications for some of these products. Responders or hospital staff must be notified of use.
AGAIN, you need to find out when and how to use it before you throw it in your kit.