For the blade, just don't suck at sharpening, and it should be fine.
For the locking mechanism, if you flick it open and shut 1000 times per movie you watch, that might wear it out a tad.![]()
And the cautionary word on sharpening would be....???
No, I don't have a Dermel or a belt sander. I do have a Lansky stone set. So far for my new knives, I have found the fine stone and the leather stop work well enough for me. But I do worry about not having a precise angle. The ZT300 I think is set at 22 degrees, but my Lansky offers 17, 20 and 25 degree settings. Is this getting into the realm of obsessing over nothing?