Well, I play keyboards in a band called
DooLee, and I bought the Virus TI primarily for live use. Currently using Emu XL-7 (fully expanded with sound ROMs) and Novation Nova, with Novation Remote SL 61 as controller. My goal is to replace them both with the Virus - a bit tricky since the E-mu has rather nice acoustic samples (the Perfect Piano is fabulous for instance), but I decided to try and manage without them. At the moment I'm working on re-creating my live setup on the Virus.
[that's why my first question on this board was about keyboard ranges in Multi mode - I often use keyboard splits for live performance]
As a side note, while Virus beats the Nova in terms of features, I noticed that the basses on it do not sound as "ballsy". In our rehearsal room, a Nova bass can shatter the walls. Since the Virus has never left home yet, I'm wondering how it will sound there..