The advantage of a clear full spectrum conversion is
the ability to change filters in front of the lens. You
can shoot UV, visible, IR and everything in between depending
on the filter you use. So you can achieve all of the
above images and more, with appropriate filters.
The disadvantage is also the fact that you have to use
filters in front of the lens and since IR filters are
opaque black the viewfinder will be blocked making it
harder to compose, meter and focus.
This conversion is mainly used in special applications
photography like forensics, astronomy, medical, etc.