While Campbell's siding material is primarily for HO, industrial corrugated siding comes in several variations where the corrugations are larger than what we would consider "normal". I think that if this product was scaled down to N, the corrugations would not be noticeable enough to be effective.
If you do use the Campbell siding, an easy way to apply it is to build the substructure from sheet styrene. I use .060", but you might get away with .040" in N. If you want to use individual panels, coat the strips of siding with contact cement
before you cut them into the smaller widths. When the cement is dry to the touch, you can use an X-Acto knife or razor blade to cut the individual sheets: however, I find it faster to use a NWSL "Chopper"; just set the stop to the proper size, and chop away. The contact cement will remain "workable" for quite some time, so be sure to keep the individual pieces separate from one another as you cut, and don't forget to also coat the substructure with cement before applying the individual sheets. You can draw guidelines on the substructure before applying cement, if required.
Here are a couple of structures, in HO, built using these methods:
Wayne