I have found several knives since I started beating the streets and back alleys several years ago, but so far they have all been pieces of junk, like those Eagle "Talon" knives. Suitable only for a tackle box: you drop it in the creek, you shrug and move along.
But today I came across a Gerber with an assisted-opening blade. Man it was sweet when I pushed the blade up just a little and it snicked all the way open. It has a partially-serrated blade. It definitely won't be going in the tackle box. It even has ambidextrous thumb studs. Nice.