Where's a wind tunnel when I need it?
Dan, I will defer to you on the "no speed increase" consensus. I did the work to enclose the ends of all the control surfaces. Lots of work. Correct about the possibility of a control jam if not done with proper care (and who knows what that is).
I cannot wrap my head around the lack of speed increase, as there is no way the open-cup exposed rib configuration has less drag. Perhaps just not enough delta to measure.
Given the above, I would _not_ do the extra work again. But I would be tempted on my next build to try gluing elevator end-ribs, flanges-out, all over the landing gear instead of installing the usual gear leg fairings - to see whether there was a speed loss. If the conventional wisdom is true, these complex end-rib shapes are amazingly lacking in drag - and aerodynamics is at least partly magic.
Could the drag secret here be the ol' golf ball dimple trick, scaled-up to the size of an aileron? Stick a half-inch deep, sharp-edged cup sideways into the slipstream and it has the same drag as a 90-degree flat surface?