yeah the nails will hold it to walls
but i think your planing to use the ply wainscoting? is going to warp and buckle if you dont glue and nail it
i say it once i say it again, do things the right way the first time and you only have to do it once
you dont want to have to pull this stuff off and do it again, so glue and nail as manfacture recomends or as commonly accepted construction practices dictate
i can just see the new home buyers complaining about the crumby warped plywood wainscoting in the bathroom, “why did’nt you glue it?” they going to say
dp
dp