This video shows how easily several Slice safety tools get through tough visqueen reinforced plastic. The Slice 10544 Scissors are excellent to cut smaller swatches, and the Auto-Retractable Utility Knife and Auto-Retractable Pen Cutter work well for longer cuts.
Slice also makes large scissors, pointed-tip scissors, a Manual Utility Knife, and a Manual Pen Cutter. All these tools will cut through visqueen reinforced plastic easily and safely.