There is a demo that you can download from the Magic Particles site.... the particles look quite nice, but they are completely 2d atm...
the 3D "look" is due to sprites being made of portions of the image and placed "over the top" of the particles. So, for instance if your game was 3D, it would be difficult to place them where you want them.
If you have a look at the forums aswell, there is a couple of requests for the GDK wrapper to have different rendering options, so that we can render the particles to a 3d object, last time I checked though it hadnt been done.
If it ain't broke.... DONT FIX IT !!!