I had seen one of these cutting a brick in half on TV so when I spotted one in one of my many junk-mail catalogs for a reasonable price, I thought it over and sent in my money. The MYZ saw is advertised as never needing to be sharpened (the edge is rough, more like a file than a saw; it cuts by abrasion, I could tell that much from the commercial) and was small enough to fit conveniently in my BOB. I thought it might come in handy someday. Then recently I was at Mom's house and she asked me to cut down some privet that has overwhelmed the gardenias and I thought 'Aha! A chance to use my new saw!' I sawed. And then I sawed some more. Then some more. Very little cutting was accomplished. The sap and green bark of the gardenia gummed up the saw's rough edge every few strokes and had to be cleaned out. So I went to Home Depot and bought one of those small pruning saws (about 11'' of blade, and folds back into its own wooden handle like a big pocketknife) and cut down the privet in less than five minutes. The moral of the story is that the MYZ saw now fits nicely inside my toolbox at home, and my $9 pruning saw fits nicely inside the outer pocket of my BOB. Maybe if my bugout route is blocked by a giant brick someday I'll regret this decision, but in the meantime I think it'll be safer to have something with me with which I can actually cut a treelimb out of the way.