Joe likes the LS-X5 a little more than me. I've heard the demo quite a few times, and I thought there was slightly too much treble sharpness; I thought the LS8+ (with whom it shares a lot with, except that it has one single dynamic for the lows instead of a quad array of BAs) was a little less sharp on top. However, I did try to shoehorn someone else's custom-fit LS-X5 into my ears, and it sounded a little better, with less harshness. Overall, it's similar to how Joe described it, but you can also read my thoughts on it here. I've heard rumors of them coming out with an X3 model too.
As of right now, the best hybrid that I've had the opportunity to hear has been the Tralucent 1Plus2, but that's a universal. Also, if you like you vocals to be very intimate, the 1Plus2 may not be for you. It's designed to have that super-expansive sound over intimacy.