I wonder would the TL 600 --Exercise base -- be best for work and get a Swiss lace for weekend wear? I know that may not be practical for a few reasons but my `concern`with wearing a hard hat frequently/all day would be the constant `pressure`/ rubbing around the perimeter if your perimeter comes `down`that far....if you only have a relatively small topper on the crown of the head, you`ll probably be fine with French lace-- depends on the size of the topper.