Head of the unit Farrukh Ali said the cops would be able to chase down thieves
But he conceded they would not operate in parts of Karachi due to poor roads
A video showed the unit in training, wielding Glock pistols while gliding around
After a month of intensive rollerblade training, the squad will be deployed around the city's narrow streets, busy intersections and in shopping centres
Paris and London have also deployed rollerblade cops, with varying success