it would maybe be more helpful if the poll were changed to 4 options:
New system - no issues
New system - needs tightening/falls off
Old system - no issues
Old system - needs tightening/falls off

as for me, I have had the new system since November 22 and only took it off this November (1 year later) so I could try on some new bracelets

Never had any issues and never had to tighten in the meantime.
edited to add: just now saw that the poll is only for the new system.. but my answer is still valid (no issues)