You have to search their site to see the current ones are not omnis, as this thread indicates. They physically damp the rear radiation from the Walsh driver in all the main models, and use a conventional tweeter starting around 8 or 10k. These tweeters are seriously toed in by default.
If you talk to them they specifically disavow omni-directional radiation.
If you talk to them they specifically disavow omni-directional radiation.