No. I am using the magnets on either side of the headliner. I have two of the same magnets on the other side. They are very powerful and strongly hold on to each other.
Inside the camera, I put smaller of the metallic plates that comes with the Scosche Magic Mount between the battery and the camera body (image of the plate
here, thanks to MrM for his post
here).
I have been using the Scosche mount arrangement for the front camera for the last 7-8 months I think. I remove the front camera every day. I just installed the rear one one week back. I will probably leave that one there full time.