Dennis, I think the ability to play the arranger styles using vsti/ au will make its way in the future. It would be good if its all inside the keyboard with a big touchscreen and easy fluid workflow... In doing so would be venturing into the open sounds available, away from the manufacturer proprietary waverom samples. It can get a little too complex for those who prefer playing easy out of the box rather than program it to sound good for the vsti we own.

I experimented using vArranger with its midi out on virtual midi port(loop midi) I had a fully loaded Sample tank vsti running in standalone mode receiving Midi on this port. It did take effort to test each style, map the instruments of choice, save the combi and get slightly above average results albeit with a lot of effort. But it does give you the option of choosing the sounds of your choice much beyond the 1000 voices found on the hardware arrangers.. I am no Midi expert but I think with all these different articulation features(SA , DNC, SN , Vce), to get the various styles sound good would be tricky. I may be wrong here but it does seem complex.

If every arranger manufacturer had a good sound map to map the SN to SA or DNC to Vce voices etc... then it will be good for the consumer ..

Sorry for the long post here...

Happy Holidays every one and hope you have a musical and fun filled 2013