I'm seriously considering one of these for fishing at night, which I do a lot. I have spoken with a couple of fellow anglers who use them and they have nothing but good things to say about it.
Being able to use one hand to open the tool and remove a hook from a big, flopping fish's mouth while holding it in the other hand sounds appealing to me. Without bragging too much, I regularly catch fish in the 25-30lb range and being able to steady my catch with one hand while operating my multi with the other and getting the job done sounds like a good idea.
I've heard of some folks not liking the black oxide finish models because it leaves a dark grit on their hands but a poster on edcf recommends buffing it with a cloth and some oil, IIRC.