Cheap knives can be surprisingly tough.I haven't seen a Mtech I'd carry.
I did carry a Colt folder for 3 years though; did everything with that knife, from cutting boxes to using it as a barbeque tool.
After I got better knives, I even threw it at trees; the damn thing never broke.
I bought a Colt fixed-blade on a whim (I liked some of it's design aspects). It was cheap so I didn't care if I broke it, and I was curious about the strength of it's tang (not a full tang), so I secured the blade in a vise and pulled the handle to the side as hard as I could, repeatedly. I expected the tang to snap off. But it didn't break, and it didn't bend.
Then I tried hard to pull the rubber handle off so I could see the tang (glued on I assume), and it wouldn't budge.
I now regard it as a very tough knife and one I would be willing to carry.