>>879367They're functional, but very heavy. So I'm not a fan in terms of pack weight and swinging a big heavy thing often can make you tired fast. A good use for them would be breaking down a wood pile. A very bad use for them would be clearing a lot of tall grass.
I think most people get them from shops in Nepal(?). I have 3 or 4. My advice is that they can rust VERY easily.
I had one that got a little rusty, I did some rust removing, mistakenly rinsed off the cleaner under hot water (don't do this), and it was then re-rusting immediately before my eyes. So, if you get one, I'd put a patina on it and keep it oiled. Or at least keep it well oiled.