It resembles the old K9AY antenna physically. But K9AYs have a broader pattern and reduced bandwidth.
The Shared Apex Loop Array pattern resembles that of a 4-square phased vertical array. The Array Solutions system can be instantly switched in eight directions, or made omnidirectional or bi-directional. The direction can even be flipped to see front to back or to check long path. No conventional mechanical rotator is used. No separate control cable is required.
This would appear to be far superior to Pixel or Wellbrook type loops which are fairly omnidirectional except for reduced pickup off each end. Those nulls, I believe, are mainly effective for reducing local noise from power-lines, nearby home appliances and such. Local crud. They can be useful for reducing problems caused by local high power transmitters. But they won't null skywave signals. Steering a Pixel loop can be done by hand or by slow mechanical means.
The Shared Loop should lower skywave AND ground wave interference. In fact it can reduce interference from atmospheric noise or distant radio signals over about 80% of the azimuth at a time.
I've used a 4 element phased vertical array on 40 meters years ago for both transmitting and receiving. It worked fabulously especially on receive but it required a lot of space and a full radial field for each of the four verticals. No radial system is required for a Shared Loop Array.
Main caveat I see is that the array should be located in the clear. Array Solutions suggests that it should be >100 feet from homes. I wondered whether the vertical center support can be hidden in a tree, or can be a tree. Cutting the lawn under the array could be a problem. In my location, deer would be a concern.
Article from QEX:http://www.arraysolutions.com/Products/SAL_shared%20apex%20loop/PDF%20Files/Bauman%20Sept%202012.pdf