My son got a demo as part of the sponsorship program - Prince wants all juniors to switch to it. I tried it as well and here is what I think (very close to what my son thought as well).
Very head light, 1 or 2 points lighter than POG. Very crisp feel, great control, volleys are out of this world. Groundstrokes don't have much meat, though, it just does not generate the solid shots. Almost impossible to produce a powerful serve. Keep in mind that adding 20 g to handle and racquet head (to preserve the same balance point) did not change the feel at all! All in all it felt like a great frame lacking the power elements that are absoulutely necessary in today's game.
We're going to ship it back, and my son will stay with POG OS, which he absolutely loves.