The thing with tools is that, unless you go into a situation with some idea of tasks you may face (navigating locked doors, cutting cables, handling dangerous materials, dismantling equipment w/o damaging it, etc.) it's nigh impossible to carry every possible dedicated tool. In a get-home bag (GHB) or bug-out bag (BOB) it's common to have a dedicated pry bar, or a knife that can serve in that capacity. Same with seat belt cutters and glass breakers for exiting a vehicle or rescuing someone trapped in one. Some folks keep bolt cutters or a small shovel. Going into the woods, a hatchet or folding saw makes sense. But as far as other tools, well . . . that's where multi-tools really shine. I've read numerous posts on this and other forums about military personnel using their issued multi-tools in combination with some sort of knife for clearing IEDs, and I have often used that same combination for cutting cable and stripping equipment before extracting it from places where bringing in a proper tool kit wasn't feasible, eg. industrial computer systems mounted inside of cabinets or attached to machinery that wouldn't allow for room to maneuver "job appropriate" tools.
I have to be honest, I haven't needed a blowgun or bow, and without having practiced with either in advance of any situation calling for one, I sure wouldn't want to stake my survival on using one. Sort of like Boris74 said, I carry a handgun wherever my permit legally allows. I also carry a folding knife and a Leatherman everywhere, every day. I keep a Statgear T3 rescue tool in my vehicle's center console and a stocked GHB in back. If I found myself facing some sort of civil unrest or disaster preventing me from getting where I needed to go, those are the tools I would have at my disposal. If I was already at home, then I would have the luxury of picking whatever was appropriate for the situation. Combat? That's not something I have ANY training or experience in, so I would have no choice but to select equipment I was familiar with, could carry with minimal impact on my mobility, and could reasonably expect to need for the purpose of keeping myself alive.