Joel,
Glad u caught the humor. Obviously the article author is unaware of how a frame shrinks as it dries. The linear dimensions change very little.
The timbers shrink in cross section tightening the joinery. The SIP's or other outer wall covering is screwed to the outer faces of the frame. If you are going to add wallboard on the interior use spacers between the post outer faces and the inner faces of the SIP's of a thickness which matches the thickness of the sheetrock. This permits slipping the edge of the sheetrock between the post and the inside face of the SIP's with the added advantage of another seam you do not have to tape. If you size the space to be sheetrocked carefully you can use whole sheets avoiding scoring and snapping. The sheetrock can be placed with either the 4 or 8 foot side in any attitude. There is no rule that says it has to be put up one way or the other. Use a drywall screw adapter on your drill and securing the wallboard to the inner face of the SIP's goes quite quickly.
When you purchase the skyline be sure the tensile strength is sufficent to hold up the tonnage of the frame.
Work safe, have fun.
Emmett (aka deralte)