I change straps "ALOT". I adore the quick release system. It seems like a much more secure way to attach a strap, especially with tubes in the straps. I think the Panerai total system (qrs, tubes, screw on buckle) is way ahead of the old way. Spring bars can fail and screws can loosen.
It makes my other more conventional systems seem slow and cumbersome. I would rather have the "QRS" serviced every 10 years if needed than go back to screws or spring bars.
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