If the software cannot be used as an arranger as a stand alone unit, then it is madness to spend so much money on it.
my personal opinion, period

Impuls piano
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Genos2,Korg Pa5X , Yamaha YC61, Ventilator2 . : https://www.youtube.com/channel/UCmC6hdAR1v5lYN8twfn0YbA