Years back when Leatherman first came out EOD Techs had asked the company to make an EOD model, which they did, and still do, with Blasting Cap Crimpers.
As for the Bayonet, sure we used it (if one did not have a better knife) to stick in the ground and wrap our Firing Wire around it, and to cut things, things other than Time Fuze, Det Cord and Wire, and we used it to open things.
I didn't see anything wrong with it, but I never had to put it on a Rifle and fight with it, and wouldn't have liked that application a bit, no matter what the Bayonet looked like.