I happened to see this the other day while browsing the EliteFTS site. It's an interesting idea that I would've never thought of. Anyway, I have an IronMind loading pin (which is essentially the same thing they're selling) and decided to try a little bit of 'stone' work for fun.
Now, I've never lifted a real atlas stone, but I have to say this was a pretty fun/different thing to throw in as a finisher for variation.
Just thought I'd throw this out here in case someone missed it. As well, I think you could do a really cheap homemade version with a 14-16" piece of 2" piece of PVC and using a clamp on both ends...