I'd drill holes. I hate touching up sheetrock but that is so far above the floor that minor imperfections (if you go to remove the pictures) would never been seen.
2011 Toyota Camry, base, 2.5L/6MT, 205k, hers
2010 Toyota Tundra DC, 4.6L/6AT, 159k, ours
1999 Toyota Camry LE, 2.2L/4AT, 225k, his