HZPiano
David Lai For me, as a professional musician, what I heard really can speak a lot into whether or not I might like it, so a demo isn't needed for me.
That is quite a gift/skill. Your sensory acuity is, out of obvious necessity, shifted to other senses than sight, significantly broadening and deepening your hearing spectrum compared to us mere mortals in this area. Or so I assume.
In my experience (and my brother's), demos of virtual instruments can be really succulent and attractive, but as soon as such instruments are under my/our own fingers, they may fall flat on their face or even be downright horrible. I won't mention names here but unfortunately have a few such purchases to my name -- thankfully not as many as some other enthusiasts who literally lost thousands of dollars/euros/other currency on misleading and polished-up marketing materials and accompanying demo sound/video material.
I've been lucky to trust @David B with regard to Modern U, for without it I would have abandoned digital piano years ago. But I also told myself not to purchase any more virtual stuff without proper test opportunities under my own fingers and on my own gear.
Although I couldn't "live with" either Pianoteq or VSL pianos, I do salute those companies for demo- and/or money back options.
So indeed, come on @VILabs , show your greatness in this aspect as well.
Cheers,
HZ