Not buying into it... Sure, it may be able to lift 30-40 grams of it's own mass, but that is not lifting the power supply that is producing that High Voltage EMF to get that lift. It is also demanding that there are some atoms in the mix that can be charged to create ions that will be ejected with force to create the resulting force (in this case, lift). The seemed perplexed that under certain conditions the system did not need additional input to keep the force going:
It's not violating the laws of physics, it is showing that the device is acting like a very high voltage capacitor with very low leakage (very few atoms being changed into ions for continued thrust. Think of it the same way as two magnets that have like poles facing each other will keep "hovering" for as long as the magnets keep their strength. It still requires the magnets (both of them) to be "there". If you get rid of the atoms completely in the equation, and/or get rid of the other surface that the charge is acting against, then the lift stops.
Again, not buying it. If they want to play around with this, let them waste someone else's money and time. There is a reason why all of the "ionic thrusters" that have been built need some type of "feedstock" to go into the HV "apparatus" to create decent "thrust". Without the feedstock (usually helium, argon, or some other gas), you are not going to get the thrust needed in space, much less enough to get TO space.