I have a yellow handle serrated Aqua Salt from the original run. It is on the shoulder strap of my forest pack, butt of knife facing forward on top of shoulder. It is not for fish filet, it is for the unlikely encounter of mountain lion and bear. I do not use it for utilitarian use. The handle is actually fairly light, and it is not something you feel is overly heavy. I lost a grommit that held the G clip on the scabbard and Spyderco sent me another one. I cinched the grommits tight and never had another loss, after these years.
My experience, that when sharpening serrations, do not round over the serration 'points'. Almost make a hook there, sharpening up TO the point on both sides of the point. Maybe this has been described on knife forums...
It is my understanding that fillet knifes do best if they are thin, but this is not a thick knife.
Since this thread is old, I hope leadership does not delete this bit of off-topicness.