I've cleaned thousands of fish over the years, as many of us have.
Both with an electric knife and a standard filet knife.
If I have to do a small amount of fish, say 5-6 or less, I will use the filet knife.
If I have to do more the electric gets the nod.
And I accept the fact that the electric wastes meat.
When we do perch there are always more than a dozen and the meat that goes to the dumpster is a lot.
But they are perch.
From Lake Erie.
I'll go get more.
But yup, an electric knife does waste more meat than a filet knife.
One last thing.
The best way I have found to clean my fish is to get someone else to do it.
Hands down!!