I wanted to buy one of those, or a tire bead hammer, when I was demo-ing 1" thick rock facade off a monument sign. A regular sledge hammer was not working, but the wedge type on these is great for demo.
I never did get one, (but I used one one day for a couple hours). IDK if the head steel is hardened for demo, but I would think it would still take a LONG time to wear it out.
I'd keep it if you have any demo/remodeling jobs or if you move machinery it can be used as a pry bar....kinda like a Johnson bar without wheels.
I still want one...