maybe not while they play , but during rehersals it s easier to tune a parameter on the module than to make new dsounds with a laptop and retransfer it...
.....keyboard players who uses portamento , filter pitch and modulation knob are actually tuning the sound on the fly ,and they are a lot doing this ... and not only in the techno scene !!!
....and what about using an expression pedal or a midi sequencer to change tune or filter frequency while you play a snare roll or a beat ? you could also (... maybe) automate the note of the kick drum to fit the diferent parts of a song , and so on ....
...even without midi controlling , using velocity to make a long synthKick sound bend or sweep isn't possible with a sample based module ...
Clavia were smart to release this , and also , i find it s clever to release a module that dont directly threat the 2BOX one ( at least for some times ....)
much better , it is a really good complement for a Drumit5 kit ...