i have a few saws being what you might obsessed as a hobby with arborism :> also asks...
the silky folding saws rock for travel (camping) and living in the car, but really aren't ideal for fast deployment and stow, which is more typical when you are in a tree, or feeding things to a chipper, or other smaller chores... avoid the longer ones, the big boy is almost too long. it flexes and you lose efficiency. it's JUST a TAD too long.
for that, you want the silky saws that are fixed blades, that have a sheath, that live on a belt, or mount on your lower leg
google "silky zubat". they come in a few shapes and sizes. good stuff.
as well, there are pole saws... up to 35 footers. pretty hot. love mine. similar blades to silky.
just recently bought a cheap modern single person bucksaw. needs tuning. works okay.
for wood processing at camp, the 30 inch Bahco with hardwood blade cannot be beat, pending a chain saw. very thin kerf, very efficient. will beat nearly any saw or axe, pending an expert user with specialty gear. also less loss of materials.
there's also a mini Bahco, which can also use hacksaw blades. that's AWESOME in a survival blade. get a couple metal blades, a carbide blade, some green and hardwood blades, and oh boy. you can do things. sure, you can get a folding frame type, but they are actually heavier and more bulky imho.