Got mine about a decade ago.Not my experience, unless things have gone down hill, but it was 8 years ago
Impressions done at NEC show. Arrived and didn’t fit. Had to drive to Maidstone to get new impressions done. Second pair fitted ok . Thirteen months later second trip using them then right speaker failed. £80 to fix .
On first day of next trip about six months later the left speaker failed on day one of two week trip . They wanted £100 to fix . Threw them in the bin . Never again.
Only ever used on trips and worn about four times.
Ok, my Custom Fit plugs don’t have speakers but they fit much better than the UEs ever did and are much better quality . They cancel out much more noise but allow music streamed through speakers to be heard just fine and in fact greatly enhance the bass compared to when not worn

).