I've tried some solves from my cubing friend's 12 (maglev version). It's disappointing.
During a move, the feel is light at the start but some strange friction quickly kicks in (like rubbing glass or something). So you feel light and stuck and the same time. The problem is the cube has been broken in around 300 solves least, with different kinds of lubing setup (including no-lubing)
I don't know if this is due to improper setup or just a single case with production flaws, but I don't want to gamble and will just wait a bit before more people have tested and shared their thoughts -- especially not from those fast cubers since they can solve fast with ANY cube.