SketchUp is not made to create extremely high detailed or production ready models.
To quickly build houses it can be used however it cannot compare to the toolset
systems like professional cad systems have for architecture where.
Now in contrast to the beginning sketchup has some good new approaches and sketching
architecture is pretty fast.
You sketch with SU you do not design with sketchup.
Those terms sound similar but are not the same bu nature depending on the depth of your work.
Well you can design a visualization of a cube boolean a sphere in sketchup.
True - but does it make it a design tool?