Well, I am one of those guys who is alive because of QuikClot. I was injured in a IED blast while riding in the gunners cup of a uparmored Ford F350, literally blown out of the cup and landed alongside of the road. If not for our medic and a ass-ton of Gen-1 QuikClot, I wouldnt be here today. So for myself, I stack it deep and its everywhere in my bugout kits.
Granted, there are plenty of steps to take before you should think of applying quikclot, as mentioned, direct pressure is best. If you are suffering from a pretty ghastly, profusely bleeding arterial/venous wound or gunshot, then hell yea, apply it asap. If not, think it out and only elevate your care level to the point its needed. Personally, if you have it on hand, then make sure you know what it does, what it doesnt do, and the steps that are going to be taken if you do actually use it.