Now on topic:

Roots on the street Pros:
positive displacement
great car show appeal
great WOW appeal driving down the road
cons:
Heavy
needs two carbs or ...
can't see past it with carbs and air filters
can't use a air to air intercooler
is way high and atrracts the wrong kind of attention
can only run low boost on pump fuel because of all of the heat it makes

Procharger on the street pro's:
no hood issues.
only need one 4150 carb
the cops can't see it
builds less heat
lighter than a roots
easier to package
can use your existing intake
intercooling does not impact your vision
can use a air to air intercooler
Cons:
hmmm none i can think of