I have a feeling that the tasting corks don't fit anywhere as close to as tight as a Belgian bottle cork. Have you ever tried to stuff a Belgian cork back in by hand after it has been removed for a couple hours? Next to impossible. I think the pressure in the bottle would leak passed the cork, and prevent a good seal. Those tasting corks aren't made very well anyway. They are basically made to prevent fruit flies or cork-challenged alien creatures from getting into the wine.