$238??? That is nearly the same cost as an offset red dot.
I like the idea of having something like a Docter offer if I'm running a scope, but not so sure about canting the rifle fior irons. I guess anything becomes second nature with enough practice.
You could probably machine your own for cheaper than those. Not quite as fancy but those are too expensive imo. I did see a similar design yesterday though, I just cant recall where I saw them.