I too would be interested in an update. I just put my order in for the empennage, so I'm a long way from wingtips. I saw the winglets at AirVenture, they looked great. I didn't know about them before seeing them at the show. I talked with Damian, and they were taking orders, and he did not indicate there was any issues or concern with fitment on the 14. It would be great if others that have successfully used the winglets on the 14 could add their input.
The question I did not think of asking Damian was about the design of the winglet. What testing was done, and the results. He did say there is a 1 mile increase in stall speed. How was that determined, and what are the verified benefits?