The main problem with the DOC is that the nightmare grind and thick blade make for a terrible EDC. The blade is 0.16 inches thick, and the nightmare grind carries that thickness out to almost the tip. Both the edge and blade geometry make the DOC a low-performance cutter. Here's a shot of my DOC blade next to a Military BG-42. The edges on both are profiled to 30 degrees inclusive.
The width of the edge shoulders on the Military is 0.026 inches. (My Sebenza is 0.017 inches.). The DOC, with its crazy nightmare grind, varies from 0.030 at the back part of the edge to 0.081 inches out near the tip. Stupid thick. Look at the difference between my reprofiled edge and Jill's stock edge.
On the plus side, my DOC is a powerful, well built knife with not even a hint of blade play. It feels as though it could pry up a manhole cover. Most aspects of fit and finish are excellent, too.
On the con side, the blade grind is so uneven that the grinder had to be drunk that day. The flipper works, but is very stiff and noisy, making the bearing pivot worthless for anything but marketing. The pocket clip is embedded in the aluminum handle, so it is super solid like most aspects of this knife, but the pocket catch flips up and, depending on your hand and/or grip, can be very uncomfortable.
Personally, I think this knife is 90 percent ninja marketing and 10 percent useful knife.