I've heard that too Jeremy but I don't have a problem. I just hand sand to about 220, then electro-etch my name into the blade, then complete the hand sanding, after which I etch the blade in ferric. There does not seem to be any conflict between the electro etch and the ferric etch.
I suspect that the problem might be this: Some people etch their name very lightly into the blade. As you see, mine is pretty deep. I think a lighter name etch might get washed out by the ferric etch but I'm not really sure of that.