I fully understand all that.
My question, again, is: "Anyone ever seen anything like this? Know potentially what to expect?"
I've never had a technical interview which involved *doing* something. Most technical interviews are rank and file memorization BS that don't really prove anything.
I like the cut of this manager's jib, as his method is sensible and keeps them from wasting time on people lacking demonstrable skills. I just have no idea what to really expect and was wondering if anyone had gone through something similar.