IMHO, if the SHTF this is the kind of kit that you want to have on hand, even if some of it is beyond your skill/knowledge level, if somebody with the right training happens to be on site you're all in business.
I agree, and that's why I carry a kit that is beyond my level of training. Once, while off-duty (LEO), I rolled up on a fresh crash scene. A nurse happened by as I took control of the scene in an attempt to avoid additional problems. She tended the injured as best she could but, had I been prepared with my
current kit, she could have done much more. Fortunately, we managed to do a fair job until on-duty help arrived.