Does anyone remember Vymura ? You had to paste the wall, not the "paper". If you did paste the "paper" it fell to bits. Well, it fell to bits anyway, as it was so fragile. Only woodchip and heavy anaglypta need soaking-in time, in my very wide experience. In some such cases, the stuff even needs two pastings.Especially for ceilings.
True wallpaper "gives" a bit when it's wet, so papering the wall doesn't work so well if you want to stretch the paper very slightly to cover bumps and dents in the walls. Vinyl doesn't "give", so you could probably get away with pasting the walls if you really wanted to.