It's hard to believe... but it seems to be true.
After searching a lot on Google I couldn't find any information about how a transmitter with 5 channels (4 in fact and 2 are useless) and fancy telemetry features, including an iStuff's link, could have its channels mixed.
I was just willing to use my TQi in my eBuggy with mechanical brake setup. For this purpose, it would be handy have channels 2 (throttle/esc) and 3 (brake/servo) mixed so as both would reply for the trigger commands. I know it could be worked out using a Y-cable joining my esc and servo brakes into the same channel 2 (they should work in reverse response to the trigger, of course), but even my cheap chinese radio has such a basic feature but TQi not
BTW, I have no idea how nitro Traxxas cars break. I've tried to understand from Traxxas manuals but I coudn't...