I've heard them. They're very similar to my Neo2x's, but they handle higher volume. They also create a more full and realistic midrange, probably due to the open baffle. I can't speak about bass, since the room had a pair of servo subs when I was listening, but separating the bass from the midrange duties has to help clarity.
I pondered about a Neo2x + cash swap offer, but I just don't have the room. My large room is full of LS9's and moving OB-7s into my small room would be just asking for trouble with the wife.