I cant say I ever thought I would speak to this as its such a silly question. Its not about the knife, its about how its used. OK so let me add to that. Knives are important, knives need to be high quality, knives need to be suited for the task that they are meant to perform.
Honestly, over the years Ive worked with quite a few SEAL's, SF, PJ's, Recon, and other high speed guys. They all basically say the same thing. Give me a tool that performs its intended task well and is specific for its purpose.
other than that, its up to individual preference or up to command to tell them what they should carry.