May a bladed weapon have both a serrated and mono-molecular edge installed in two of it's hardpoints? I'm just wondering as this would entail making two changes to the edge. I mean, I can see being able to do both to the same blade (even if it would take a lot of work to put a mono-molecular edge on every part of the blade after the serration). I mean, ppl. sharpen saws, the serrations on the K-Bar Knife, etc...in real life, right?

I allow it. GMs call but you're right, it's possible to have a really sharp serrated edge.