FWIW, I too purchased some Canon 15 x50 is binos around 10 years ago. I’m quite happy with them from an optical perspective.
In my case, the rubberised finish turned gooey about 5 years ago, but I cleaned it off with alcohol : so cosmetically not so nice. Also they eat batteries. Hard to find good AA cells that last for any time when using for extended periods. Usually plan to replace batteries before each session.
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