Ben,
About the speed of toggling the switches.

Orbit, did use one switch for each control function. Ed K. did have two thumbs, one left side and one right side , so the transmitter has to be dual simultaneous at least and it was.
Telecont 9 did use one combined two functional stick and one single for the main control functions and for that the system was triple simultaneous.

Frits Bosch did have the possibility to input 3 control activities on the same moment, 50 % faster without the need to move his thumb from one stick or switch to another.

So in technical and operational way the Telecont 9 did beat the Orbit radio and result maybe was Frits on place 2 and Ed on place 3 of course we do not know for sure . The reason Ed did beat all the other 16 Taurus pilots is another story but did not have to do with the radio (future)!!

Old radios.

This is classic pattern flying and I did show me and my own old pattern transmitter the way I did store it 35 years ago, no more and no less.
For my Taurus of course I use my “modern” Multiplex Profi Modul transmitter with all my personal made features and for that reason I did write, “you have a long way to go”, also thinking about the story I did read about your Junkers-52,

http://www.rcuniverse.com/forum/fb.asp?m=9739807

Do not forget, MMC most important of all.

Cees