What I'm getting from all this is that twin carbs rule, but the Triumph twin carb head sucks. So, if you put twin carbs on a single carb head especially an early small port one, you get the best of both.
Sound about right?
I'd like to do some experimentation myself, but money and time are issues at this point.
It beats all the work you would have to do to make the twin carb head work.

1974 Commando
1985 Honda Nighthawk 650
1957 Thunderbird/T110 "Black Tiger"
Antique Fans: Loads of Emersons (Two six wingers) plus gyros and orbiters.