Well...after ton of test with our new qranger I can agree is some parts but not to the all.
VST plugins can help a lot for new top level sounds and also Kontact and Gigastudio for the sampler setup.
The big problems of this 2 sampler are the loading time untill the all sounds are ready to playing. ( gigastudio ned much more time than kontact) Big files need to be chaced in ram before they are ready to play, we know that.
Some VST can be OK, if they then have the all data in ram, but still Realguitar need a lot time for loading the new guitar setup presets.

After this all engine are running, the big issue is the full integration on the arranger engine/interface.
Wersi is able to manage it by midi out, fr play the all notes, but for sure can NOT manage the all controlles that fe example Kontact or realguitar have.
Wersi was the first company that have developed OS windows interface for musical instruments and still they offer really nice interface. ( this also because they are manufacture of hardware)

Neko/Miko can compete only in the sounds quality but never with propietary OS/interface.
They just install and optimize standard PC windows software, just for recall some sounds in realtime.
If you just want play, mix 2 Mp3 and play over with the keyboard, the Neko/Miko is not allowed, because the Audio card will be busy from another application. ( single ASIO istance at time)

Return to the arranger issue.. it mean that in real live situation you have to fight every time when you will to load a new styles and setup.
This in the PLUS on the embedded keyboard that have all the sounds resident on ROM/Flash and this all sounds are ready to play ( of course we know, limited on RAM space and for the 80% reduced also the sample rate to 32khz and in MONO too)

IF then, after you have resolved this basic Midi issue, remain then the realtime audio loops in sync with the timecode and fast to switch when chords are pressed.
Wersi arranger still is under the MIDI domain, like the all others arranger and is not able to streaming wav in sync with the midi.

The best way to resolve this all problem is to use one good SEQ audio-midi with integrated the audio straming and sampler streaming: http://www.lionstracs.com/demo/qranger/Qrangersampler.jpg
Now we have integrated the LS sampler in the engine, where for each midi track we can load one different GIG file and save it in the session.
In about 1 sec, will loaded the all audio loops and giga files used for the loaded style.
with the Export session, the qranger will create a new folder and copy inside the all Audio-midi Giga data used for this style and ready to Move and play to other Mediastation keyboards.
This is the Step that Wersi have to take too. For the all others keybaords( untill they jump to the PC X86 system) this remain only a dream...

enjoy what you play