I posted already to your similar, earlier thread, so I won't repeat my crossover list here, but:

I'll reiterate that there is crossover between survival gear and backpacking gear - though no individual item is guaranteed to be optimal for both.

I do a lot of lightweight/ultralight backpacking, and the gear I take on those trips (including a PSK and FAK) will let me survive and get out of trouble in that specific situation...but it's not the gear I'd choose for durability and long-term survival. Much of it is not the gear I'd choose for an aviation survival kit.

Either way, I get to to use the equipment for real (at least lots of it), test it out, think about it, and am continually improving my ideas for all of my kits as a result. Backpacking's a great arena for that...