I have tried Kenko teleconverter with AFS 18-200 VR1, AFS 17-55 f/2.8, AFS 70-200 VR1, and it works.
This thing that is not possible using original Nikon teleconverter with the first two lenses.
VR works for Kenko+AFS 18-200 VR1.
Center sharpness is reasonable sharp.