"I'm looking for a hard-use folder for every-day carry (I'm in law enforcement now) that can double as a last-resort back-up."
Here's where the Sebenza falls short. It's half way there - it's a fine hard-use folder for every-day carry. However it's a very poor last-resort back-up.
First off, the handle's too small; it does not have the potential to be used as a striking weapon when closed. You have to escalate up to open blade; you can't just beat the crap out of the BG with the closed knife. Secondly, there is no, read that NO thumb protection when holding the knife in a saber grip for slashing and thrusting. Notice how the Spiderco tacticals (Military, Police, Ayoob, you name it) give limited protection; the Cuda Maxx and others give significant protection. No, the Sebenza is a poor tactical last-resort weapon, but IT WASN'T DESIGNED FOR THAT. It's a great working knife, but that's what it does. As a tactical knife, it gets a C-.