There is not much need for today's soldier to carry a knife, first.
Most knives that are issued are from the private sector. Personally I would hate to see what would happen if the military brass designed a knife. It would probably cost $10000 and have a 500 page manual.
This is crap, the military help to design many fine knives in the past, Ka-Bar, several stilettos, etc. But now the military just does not seem interested in fine cutlery. The enlisted go to the local store and buy the cheapest knives they can find!
Cordially,
BabyJWuu