You have a winner in that design. I'm baffled at the confidence I have in the 5 iron I built to try. I hit it anywhere I get the chance. I intended it to try along side my 5 iron for comparison, my 5 iron is out of the bag, my 6 iron hasn't been touched since and I actually prefer backing off on that club to hit low shots in to the green where I would typically try to flight a 7 iron.
Once life / my financial security allows, I'm putting a full set together. I'm looking at next year at this point, but no doubt in my mind the single length concept is going in my bag as well.