Tout d'abord, merci à toi Geerd pour ton super programme (j'ai vu dans Audiofanzine que tu étais francophone... un ami belge sans doute)
Let's carry on in English...
For this purpose, I use the Cubase's Midi Input Transformer and scripting it this way: (sorry for the French Cubase)

In this example, Midi CC 22 is grabbed.
IF CC value is 127 OR in the defined range, let's send the note.
You'll have to make the full (CC value=127) gesture to trigger the note.
The problem was to have a Note Off when you return your hand to the neutral position.
That's why a selected range (you'll have to fine tweak that, depends on the type of gesture) also triggers the note, but with velocity=0 (witch stands for Note Off) thanks to the value2 (velocity) -126 trick.
The Note On will trigger the note with velocity=1 (enough for key switch)
Note On => 127-126=1
Note Off => X (in the range you define but <127) =0 cause the Input Transformer sets negatives values to Zero.
Et voilà, you finally got your Note Off, and it works!
Since we have 4 modules in Cubase's Input Transformer, it should be possible to assign a bunch of 4 keyswitches to gestures.
Only tried the playability with one among continuous controllers... good!
Cheers.