I'd also like to hear how others use this with Logic. I have one and use it, but not nearly to the advertised capacity. Reason: the mapping/software is complex to me, really complex, and I haven't the time. It takes, for me, much time to get these maps right, even once you get past the learning curve.
The keyboard itself is not really my favorite. I have others, and often thought that velocity was a "mushy" issue on this board. After numerous tests, I concluded that it was truly "mushy"; it has a slightly wider velocity range with my best efforts (and I'm a trained pianist, not a "general" musician.) It's OK, but not the best.
For my use, this thing is quite good for using soundscape/effect synths, setting up long developing tonal scapes, and even short effect synths like FM8 and Absynth, and for quick composition. But not for a final, like strings, where attack vel is crucial. I'm sure if one has the time, it would be well worth it. In its defense, it's quite well built, and Novation support is good.
If anyone has used this for Logic's effects, other than SWI like Sculpture, etc, I'd like to know if it's been worth the great effort.