Have not played with it, but I would be extremely surprised if you got any interesting shadows from putting one of the in a
scoop.
You get shadows
in one of two ways.
You have a 'somewhat'
point source of light and you put a
pattern in front of it to cast a shadow. The closer to a
point source / further from the light / shorter the distance from the
pattern to the surface you are lighting, the sharper the shadow.
You have a
pattern with light coming through it and lenses to project the
image ( dark
pattern, bright light) onto a surface. In this mode the location of the
pattern is fixed between the lamp and
lens, and the sharpness is controlled by how you focus the
lens.
If you are thinking of putting one of these in a
scoop instead of color, you will find that
the light source is not enough of a
point source as it bounces off of the
reflector in a wide mush of light.