Hello Spalding
Just remembered, Daniel Watt www.danielwatt.com uses the Wersi OAS Expander (Basically the Ikarus without keyboards) in all his performances these days, (Controlled by his old Wersi Spectra) including extensive use of Akai and VST Instruments, so if you pop over to his site there are some short samples from the CDs Pavanne and Aquarius that feature them which you can have a listen too. (The software is OAS 6 as he has only just recently upgraded to OAS 7, so he has not yet featured it)
Wish I had thought of this sooner, as he was playing down at Kingswinford a month or two ago, which may have been within easy travelling distance for you. (He also uses 2 Bose L1 speaker systems for the sound)
Hope this helps

Bill