I know the board you're talking about. Never tried that but i would think it would hold well without the kills. The paper most likely has a stippeled surface which would help with the hold too. Use an all purpose joint compuond and just experiment by dabbing a small spot on the wall and let fully cure. I'm sure it wont come off easily as you could put on a glass window and it would hold very well. Added moisture, i wouldnt think would help the life of standard wall paper...not to sure about the paper surface of the board your talking about....interested to hear other experienced opinions on painted wall paper though?