I went to the Bonanza build thread mentioned, and Vince clearly wrote there:
“I'm incorporating something that I've never done before in any build. The ailerons are going to operate without any visible linkage. This will be accomplished using a Rotary Drive System (RDS) that has been used by the slope gliding community for some time now.”

This goes back to what I wrote about looking for actual experience of someone having used it successfully over time, on an i.c. powered model, flown frequently.

But beyond all that, the TF Cessna has solid ailerons so incorporating such a system in that, isn’t so practical.

Anyway I got my Cessna ailerons conforming very nicely to the washout now, and am proceeding happily with the build.