I have a buddy that has always brought long-handled shears (~ 24") with us out in the field for work. I have a 12" bolo and a saw, so I thought we didn't need them.
We got our van stuck in sand on an access road right next to a levy, and had to cut through branches to get the van out. If we didn't have those shears, I'd still be hacking away at that stuff... it was too springy to chop well and to green to saw cleanly. The shears were the right tool, no doubt.
Now, I wouldn't hump those shears into the back country, but they'll damn sure be in the van.