I made a screen recording of a qso to demonstrate the serial interface between keyer / decoder of my ChipKit / PIC32 keyer. Both sides of the qso are displayed. The keyer switches the text color to identify the source, me or the other end of the qso. The speed on both sides was 70 WPM most of the time.
The "text" is also displayed on the LCD in the keyer, but I keep that turned off because it sits in my field of view and I find it distracting at higher speeds.
This link hopefully will go to YouTube:
Sounds and looks good. Your keyer exploits would make a good article for QST!