Try the Orions (I own a pair) - they have a very similar midrange but don't suffer from panel limitations.
I have not heard them - but I agree that this design will definitely sound closer to MrTennis's prized Quad's than most conventional box speakers. Of course, I have been shouting to the rooftops about radiation patterns, for some time already!.
It is the way the lower half of the midrange behaves that is so distinctive about the sound of these designs compared to conventional boxes. Without going into technical details MrTennis should hear a very spacious sound (correctly placed) with the odd note of an instrument jumping out at you - just as it does in a concert hall due to the dimensional/room effects.