I built my SLC for the street and to be a "Driver". I wanted to minimize the time spent cleaning and maintaining it.
I see lots of forum posts about clear headlight covers getting dirt, dust, bugs, moisture, etc inside and then they need to be pulled apart to be cleaned. This seems to happen whether its a SLC, GTM, Cobra Daytona, Corvette, etc.
For that reason, I went without the lenses and blended in the edges. The Pagani like "eye lid" bodywork around the headlights is nicely done and people tell me its one of the more distinctive elements of the front end.