I couldn’t find data on any of the Dynaudio Evoke series, but looking at their other speakers I could see a lot of what one would expect from the topology they typically use, and that is a widening of dispersion until the crossover frequency, where it narrows again as the woofer takes over, and then goes wide again. This results in a classic sound that I personally find intriguing at times, tiring at others. A widening of dispersion at higher frequencies to my ears has more openness and sparkle in most listening rooms. Some times I like it, sometimes I don’t.
The Mofi maintains a more even dispersion widening effect as the frequency goes down. It’s pretty optimal according to certain technical specifications that say that’s what speakers should do. My personal preferences generally agree with that assessment. All things considered, I find speakers with a very smooth change in directionality sound more natural overall. But that can mean less sparkle on some recordings that might sound better with. Ultimately it comes down to preference.
I’ve been tinkering with loading dome tweeters and midranges into waveguides and I run into problems with reflections. I don’t know how folks from Genelec or Mofi are getting them to measure so well. The center of a dome produces most of the sound power, and that leads to reflections that create cancellation zones when I try it. KEF uses a fancy phase plug in their coaxial tweeters. That I can understand. How Genelec and Mofi get away without one is a trick I don’t understand.