I got a knife my grandfather used, that has been sharpened so much it looks like a fillet knife. Ergonomics? It cuts, I don't care. It's a good reserve.

Good point about dimples though. But thinking about it why wouldnt I be able to sharpen it? A knife's like 2mm thick while a dimple is idk I don't have one such knife, but it's probably much less then 0.3mm and the edge obviously tapers.