Greetings, Raven!
Ah, Found your "pissy post" here.

(Raven knows what i mean!)
You now have on order what you will need: i speak not from overseas combat/near-combat experience, but from others: MANY gone to the hot-spots with Busse knives, they don't complain, they exclaim!
The Badger Attack will do your main tasks; many LEO's have that as their back-up, & i'm talking more than tools, but weapons in close-quarters; the Battle Mistress can do all your "carving home out of a rock" & of course, can be an effective weapon. The Mr. MoJo, designed for weaponry, plus utility, is your "investment" in this purchase, but if it's the Combat Grade, don't be afraid to use it: they can always recoat the blade, & the steel won't be damaged by much of anything. (Or just send that to me for safekeeping in my knifedrawer

Ha! Ha! i'd send it back after the danger's over...)
Seriously, tho, if you already have a Leatherman for the diddly stuf, the Busse line-up you have is the ticket to contentment in your circumstances, without moving into firearms, which you already explained... Get a ceramic rod or two (order from a garden supply house, it's cheaper there than a knife specialty house; unless Busse sends ya one for free, which they may, if they have any, for such a "GRAND" purchase) & some "polishing/sharpening" compound for a strop: just a piece of leather dedicated to super-sharpening your blades while fondling them in those off-hours... Besides, where YOU'RE going, those folks RESPECT a man who wields a knife... that's their heritage; (but they ain't met INFI...

)
Sit-ups, push-ups, & some light cardio-work might be wise, if you really think that preparing is in order with the tools: no sense not being up to the use of your tools, when you need them: i'll be praying for your safety, alertness, & return, from The Danger Zone.
And:... THANKS, for being there; you're one of the heroes, y'know...
(Just don't let it go to your head! Ha!

)
In Nuclear Tough Prayer Wars,
Climber Clif