I tried out the xv-88 this week. The keyboard feels wonderful. The aftertouch is fantastic. The user interface is...lacking. The arpeggiator is lame, the d-beam is okay but not stupendous.
Still, I'm thinking about getting it but only if I can compliment it with a Yamaha EX5R. Hopefully Inray will have more gossip on the workstation based on the xv-88 soon.