IRA policing more effective than PSNI?

On the BBC’s Radio Five Live phone in programme yesterday, one respondent called in from South Armagh and argued quite plausibly that although he was not a Sinn Fein voter, he’d seen a pattern of disorder moving in in areas where the local IRA had ceded policing control to the PSNI (temporary sound file, about 1/2 hour in). Is this one reason why nationalists are reluctant to accept the PSNI as their local police force?