I have never in 11 years been issued a knife. We have bayonets in the armory to be issued before combat. But just like ammo this is not EDC or issued for training.
The military FAK is amazingly sparse. But I wouldn't want many of my soldiers walking around with kits full of Vicodin <img src="images/graemlins/crazy.gif" alt="" />
EDC is usually purchased at the PX. Currently most PXs are stocked with K-Bar, Cold Steel knive, Leatherman, Spyderco, various SAK, and SOG tools. So guess the answer is that is what most people carry. Most soldiers can not afford a Sabenza.