I am a Jawhorse convert. It's honestly transformational and I'm not a wood worker. The ability to clamp things while stabizing them with both hands, reposition, reclamp, etc. and then really lean in an cut/grind is awesome. I actually have two. When I make cuts, everything just stays put. No pieces falling off or rolling off the out feed.
Full disclosure, I actually have the Harbor Freight version, one of which I got as an open box/damaged item. I straightened the bent foot and it is as good as new. From what I can tell, it's about as good as the original, and I actually appreciate the more simplified feet. I'm going to fabricate some different jaws for them to suit some specific needs, but otherwise, I wouldn't change much. I've often thought about making a "super jawhorse" specific for metal work, but it would certainly not be as portable as the original.