covers cause DVD player problems?

I am making my own DVD home movies and had bought the NEATO cd covers to be able to label these.
QUESTION:
Does anyone know if these NEATO covers or any cover would actually cause the DVD player to malfunction
(skip, pause, etc.) just due to the fact that when you buy a DVD from the store the labels are actually
painted on the disc which would make it far less likely to become uneven, etc. in the player as opposed
to the covers i plans to stomp on that are paper which can become unstuck from the disc over time.
I guess my big dilema is basically.....do i just write the darn names of the DVD's on by Permanent
marker and not worry about the sticker coming off and the DVD player not liking them and have it be
less attactive OR stick the COVERS on and assume they do not have any effect on anything?
Thx so much for the input.