It's a really good system but I think would be hard to learn. No other woodwind I know of has anything similar.
That sentiment reminds me of the infamous McIntyre system. It was hard to learn, unwieldy, and unlike anything else in the world at the time.
The idea was sound - create a key system with perfect-pitched throat tones.
Execution was superb - high quality Thibouville construction led to great instruments.
Result - a top-heavy, hard to learn, and unintuitive experiment that died in 2 years.
I am convinced that if people gave the McIntyre Bros a chance it could have been something incredible. Imagine - an articulated (central C#/G#) clarinet with McIntyre throat-tones, and maybe even a touch of Mazzeo.
Clarinets could have evolved into another dimension. Unfortunately, modern clarinets (all of them! far as I can tell) are constrained by 200+ year old conventions that really constrict the musical dimension.
The only modifications we can find in common, modern productions clarinets is the Schrieber - I believe they produce a
side register key. Amazing.