I recently won one of these on Ebay, https://thumbs.worthpoint.com/zoom/...bill_360_ae0ce4509236fa7ef4ab7a39b79cabd0.jpg which will replace my cheap and cheerfull hardware store machete. I took for a test drive today hacking away at nettles, himalayan balsam, rosebay willow herb and brambles. There is no comparison to a machete, this is the mutts nuts. It is less curved than a sickle, but curved enough to catch whatever you want to cut back. Very thick towards the handle and tapers toward the end, and the bevel is interesting, it is essentially flat on one side, with a convex grind on the other. Some pitting from rust but you don't really have to worry about that. Is it ergonomic? I'll say, feels very comfortable in the hand (I do suffer from carpal tunnel syndrome so that is important) and the weight and balance is just right. I have no idea whether you can still get these kind of tools new, I would guess not, but like my Elwell bill hook it is well made and I would think the design was perfected by centuries of blacksmiths and cannot be improved.