I've carried a fully serrated Spyderco Salt 1 for about five years now as my primary EDC.
I work in an auto parts store, and it has handled anything and everything I've thrown at it!
It works great for breaking down cardboard boxes, it opens up those plastic blister packs that everything seems to come in these days, and I've even used it to cut away corroded battery cable ends.
I've cut away automotive belts that have broken and gotten tangled up in the customers pulleys. This is something I wouldn't want to do with a plain-edge blade, especially when the customer's engine is red-hot! The serrated edge just grabs and cuts through very quickly.
Oh, and everytime we change a planogram on the sales floor, I've used it to cut away the plastic zip-ties that hold the wing-panels to the main shelves.
It really excells at that!
I've used it at the house to trim diseased leaves and stems from my rose bushes.
I've cut open burlap bags with it.
I've basically cut a lot of things with this knife that would have meant a trip to the sharp-maker with a plain-edge blade, yet the serrated-edge just keeps going!
There are a couple of cons to this blade.
First, the serrated edge can indeed get caught up in some materials and snag.
Second, for some people, sharpening a serrated edge can be intimidating.
It was for me, at first. But then, I bought a Spyderco Sharpmaker and never looked back.
Hope this helps,
Flinx